21000816720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{691}}^1$

素因数の和:931

約数の個数: 480

約数和(自身を含む): 80958818304

約数和(自身を除く): 59958001584

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 17, 18, 20, 24, 26, 30, 34, 36, 39, 40, 45, 48, 51, 52, 60, 65, 68, 72, 78, 80, 85, 90, 102, 104, 117, 120, 130, 136, 144, 153, 156, 170, 180, 191, 195, 204, 208, 221, 234, 240, 255, 260, 272, 306, 312, 340, 360, 382, 390, 408, 442, 468, 510, 520, 573, 585, 612, 624, 663, 680, 691, 720, 764, 765, 780, 816, 884, 936, 955, 1020, 1040, 1105, 1146, 1170, 1224, 1326, 1360, 1382, 1528, 1530, 1560, 1719, 1768, 1872, 1910, 1989, 2040, 2073, 2210, 2292, 2340, 2448, 2483, 2652, 2764, 2865, 3056, 3060, 3120, 3247, 3315, 3438, 3455, 3536, 3820, 3978, 4080, 4146, 4420, 4584, 4680, 4966, 5304, 5528, 5730, 6120, 6219, 6494, 6630, 6876, 6910, 7449, 7640, 7956, 8292, 8595, 8840, 8983, 9168, 9360, 9741, 9932, 9945, 10365, 10608, 11056, 11460, 11747, 12240, 12415, 12438, 12988, 13260, 13752, 13820, 14898, 15280, 15912, 16235, 16584, 17190, 17680, 17966, 19482, 19864, 19890, 20730, 22347, 22920, 23494, 24830, 24876, 25976, 26520, 26949, 27504, 27640, 29223, 29796, 31095, 31824, 32470, 33168, 34380, 35241, 35932, 37245, 38964, 39728, 39780, 41460, 42211, 44694, 44915, 45840, 46988, 48705, 49660, 49752, 51952, 53040, 53898, 55280, 58446, 58735, 59592, 62190, 64940, 68760, 70482, 71864, 74490, 77928, 79560, 80847, 82920, 84422, 89388, 89830, 93976, 97410, 99320, 99504, 105723, 107796, 111735, 116892, 117470, 119184, 124380, 126633, 129880, 131981, 134745, 137520, 140964, 143728, 146115, 148980, 152711, 155856, 159120, 161694, 165840, 168844, 176205, 178776, 179660, 187952, 194820, 198640, 211055, 211446, 215592, 223470, 233784, 234940, 248760, 253266, 259760, 263962, 269490, 281928, 292230, 297960, 305422, 323388, 337688, 352410, 357552, 359320, 379899, 389640, 395943, 404235, 422110, 422892, 431184, 446940, 458133, 467568, 469880, 497520, 506532, 527924, 528615, 538980, 563856, 584460, 595920, 610844, 633165, 646776, 659905, 675376, 704820, 718640, 759798, 763555, 779280, 791886, 808470, 844220, 845784, 893880, 916266, 939760, 1013064, 1055848, 1057230, 1077960, 1168920, 1187829, 1221688, 1266330, 1293552, 1319810, 1374399, 1409640, 1519596, 1527110, 1583772, 1616940, 1688440, 1691568, 1715753, 1787760, 1832532, 1899495, 1979715, 2026128, 2111696, 2114460, 2155920, 2243677, 2290665, 2337840, 2375658, 2443376, 2532660, 2639620, 2748798, 2819280, 3039192, 3054220, 3167544, 3233880, 3376880, 3431506, 3665064, 3798990, 3959430, 4228920, 4487354, 4581330, 4751316, 5065320, 5147259, 5279240, 5497596, 5939145, 6078384, 6108440, 6335088, 6467760, 6731031, 6863012, 6871995, 7330128, 7597980, 7918860, 8457840, 8578765, 8974708, 9162660, 9502632, 10130640, 10294518, 10558480, 10995192, 11218385, 11878290, 12216880, 13462062, 13726024, 13743990, 15195960, 15441777, 15837720, 17157530, 17949416, 18325320, 19005264, 20193093, 20589036, 21990384, 22436770, 23756580, 25736295, 26924124, 27452048, 27487980, 29167801, 30391920, 30883554, 31675440, 33655155, 34315060, 35898832, 36650640, 40386186, 41178072, 44873540, 47513160, 51472590, 53848248, 54975960, 58335602, 61767108, 67310310, 68630120, 77208885, 80772372, 82356144, 87503403, 89747080, 95026320, 100965465, 102945180, 107696496, 109951920, 116671204, 123534216, 134620620, 137260240, 145839005, 154417770, 161544744, 175006806, 179494160, 201930930, 205890360, 233342408, 247068432, 262510209, 269241240, 291678010, 308835540, 323089488, 350013612, 403861860, 411780720, 437517015, 466684816, 525020418, 538482480, 583356020, 617671080, 700027224, 807723720, 875034030, 1050040836, 1166712040, 1235342160, 1312551045, 1400054448, 1615447440, 1750068060, 2100081672, 2333424080, 2625102090, 3500136120, 4200163344, 5250204180, 7000272240, 10500408360, 21000816720]

約数ペア:

[(1, 21000816720), (2, 10500408360), (3, 7000272240), (4, 5250204180), (5, 4200163344), (6, 3500136120), (8, 2625102090), (9, 2333424080), (10, 2100081672), (12, 1750068060), (13, 1615447440), (15, 1400054448), (16, 1312551045), (17, 1235342160), (18, 1166712040), (20, 1050040836), (24, 875034030), (26, 807723720), (30, 700027224), (34, 617671080), (36, 583356020), (39, 538482480), (40, 525020418), (45, 466684816), (48, 437517015), (51, 411780720), (52, 403861860), (60, 350013612), (65, 323089488), (68, 308835540), (72, 291678010), (78, 269241240), (80, 262510209), (85, 247068432), (90, 233342408), (102, 205890360), (104, 201930930), (117, 179494160), (120, 175006806), (130, 161544744), (136, 154417770), (144, 145839005), (153, 137260240), (156, 134620620), (170, 123534216), (180, 116671204), (191, 109951920), (195, 107696496), (204, 102945180), (208, 100965465), (221, 95026320), (234, 89747080), (240, 87503403), (255, 82356144), (260, 80772372), (272, 77208885), (306, 68630120), (312, 67310310), (340, 61767108), (360, 58335602), (382, 54975960), (390, 53848248), (408, 51472590), (442, 47513160), (468, 44873540), (510, 41178072), (520, 40386186), (573, 36650640), (585, 35898832), (612, 34315060), (624, 33655155), (663, 31675440), (680, 30883554), (691, 30391920), (720, 29167801), (764, 27487980), (765, 27452048), (780, 26924124), (816, 25736295), (884, 23756580), (936, 22436770), (955, 21990384), (1020, 20589036), (1040, 20193093), (1105, 19005264), (1146, 18325320), (1170, 17949416), (1224, 17157530), (1326, 15837720), (1360, 15441777), (1382, 15195960), (1528, 13743990), (1530, 13726024), (1560, 13462062), (1719, 12216880), (1768, 11878290), (1872, 11218385), (1910, 10995192), (1989, 10558480), (2040, 10294518), (2073, 10130640), (2210, 9502632), (2292, 9162660), (2340, 8974708), (2448, 8578765), (2483, 8457840), (2652, 7918860), (2764, 7597980), (2865, 7330128), (3056, 6871995), (3060, 6863012), (3120, 6731031), (3247, 6467760), (3315, 6335088), (3438, 6108440), (3455, 6078384), (3536, 5939145), (3820, 5497596), (3978, 5279240), (4080, 5147259), (4146, 5065320), (4420, 4751316), (4584, 4581330), (4680, 4487354), (4966, 4228920), (5304, 3959430), (5528, 3798990), (5730, 3665064), (6120, 3431506), (6219, 3376880), (6494, 3233880), (6630, 3167544), (6876, 3054220), (6910, 3039192), (7449, 2819280), (7640, 2748798), (7956, 2639620), (8292, 2532660), (8595, 2443376), (8840, 2375658), (8983, 2337840), (9168, 2290665), (9360, 2243677), (9741, 2155920), (9932, 2114460), (9945, 2111696), (10365, 2026128), (10608, 1979715), (11056, 1899495), (11460, 1832532), (11747, 1787760), (12240, 1715753), (12415, 1691568), (12438, 1688440), (12988, 1616940), (13260, 1583772), (13752, 1527110), (13820, 1519596), (14898, 1409640), (15280, 1374399), (15912, 1319810), (16235, 1293552), (16584, 1266330), (17190, 1221688), (17680, 1187829), (17966, 1168920), (19482, 1077960), (19864, 1057230), (19890, 1055848), (20730, 1013064), (22347, 939760), (22920, 916266), (23494, 893880), (24830, 845784), (24876, 844220), (25976, 808470), (26520, 791886), (26949, 779280), (27504, 763555), (27640, 759798), (29223, 718640), (29796, 704820), (31095, 675376), (31824, 659905), (32470, 646776), (33168, 633165), (34380, 610844), (35241, 595920), (35932, 584460), (37245, 563856), (38964, 538980), (39728, 528615), (39780, 527924), (41460, 506532), (42211, 497520), (44694, 469880), (44915, 467568), (45840, 458133), (46988, 446940), (48705, 431184), (49660, 422892), (49752, 422110), (51952, 404235), (53040, 395943), (53898, 389640), (55280, 379899), (58446, 359320), (58735, 357552), (59592, 352410), (62190, 337688), (64940, 323388), (68760, 305422), (70482, 297960), (71864, 292230), (74490, 281928), (77928, 269490), (79560, 263962), (80847, 259760), (82920, 253266), (84422, 248760), (89388, 234940), (89830, 233784), (93976, 223470), (97410, 215592), (99320, 211446), (99504, 211055), (105723, 198640), (107796, 194820), (111735, 187952), (116892, 179660), (117470, 178776), (119184, 176205), (124380, 168844), (126633, 165840), (129880, 161694), (131981, 159120), (134745, 155856), (137520, 152711), (140964, 148980), (143728, 146115)]