256554480

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{691}}^1$

素因数の和:744

約数の個数: 320

約数和(自身を含む): 1037933568

約数和(自身を除く): 781379088

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 17, 20, 21, 24, 26, 28, 30, 34, 35, 39, 40, 42, 48, 51, 52, 56, 60, 65, 68, 70, 78, 80, 84, 85, 91, 102, 104, 105, 112, 119, 120, 130, 136, 140, 156, 168, 170, 182, 195, 204, 208, 210, 221, 238, 240, 255, 260, 272, 273, 280, 312, 336, 340, 357, 364, 390, 408, 420, 442, 455, 476, 510, 520, 546, 560, 595, 624, 663, 680, 691, 714, 728, 780, 816, 840, 884, 910, 952, 1020, 1040, 1092, 1105, 1190, 1326, 1360, 1365, 1382, 1428, 1456, 1547, 1560, 1680, 1768, 1785, 1820, 1904, 2040, 2073, 2184, 2210, 2380, 2652, 2730, 2764, 2856, 3094, 3120, 3315, 3455, 3536, 3570, 3640, 4080, 4146, 4368, 4420, 4641, 4760, 4837, 5304, 5460, 5528, 5712, 6188, 6630, 6910, 7140, 7280, 7735, 8292, 8840, 8983, 9282, 9520, 9674, 10365, 10608, 10920, 11056, 11747, 12376, 13260, 13820, 14280, 14511, 15470, 16584, 17680, 17966, 18564, 19348, 20730, 21840, 23205, 23494, 24185, 24752, 26520, 26949, 27640, 28560, 29022, 30940, 33168, 35241, 35932, 37128, 38696, 41460, 44915, 46410, 46988, 48370, 53040, 53898, 55280, 58044, 58735, 61880, 62881, 70482, 71864, 72555, 74256, 77392, 82229, 82920, 89830, 92820, 93976, 96740, 107796, 116088, 117470, 123760, 125762, 134745, 140964, 143728, 145110, 152711, 164458, 165840, 176205, 179660, 185640, 187952, 188643, 193480, 215592, 232176, 234940, 246687, 251524, 269490, 281928, 290220, 305422, 314405, 328916, 352410, 359320, 371280, 377286, 386960, 411145, 431184, 458133, 469880, 493374, 503048, 538980, 563856, 580440, 610844, 628810, 657832, 704820, 718640, 754572, 763555, 822290, 916266, 939760, 943215, 986748, 1006096, 1068977, 1077960, 1160880, 1221688, 1233435, 1257620, 1315664, 1409640, 1509144, 1527110, 1644580, 1832532, 1886430, 1973496, 2137954, 2155920, 2290665, 2443376, 2466870, 2515240, 2819280, 3018288, 3054220, 3206931, 3289160, 3665064, 3772860, 3946992, 4275908, 4581330, 4933740, 5030480, 5344885, 6108440, 6413862, 6578320, 7330128, 7545720, 8551816, 9162660, 9867480, 10689770, 12216880, 12827724, 15091440, 16034655, 17103632, 18325320, 19734960, 21379540, 25655448, 32069310, 36650640, 42759080, 51310896, 64138620, 85518160, 128277240, 256554480]

約数ペア:

[(1, 256554480), (2, 128277240), (3, 85518160), (4, 64138620), (5, 51310896), (6, 42759080), (7, 36650640), (8, 32069310), (10, 25655448), (12, 21379540), (13, 19734960), (14, 18325320), (15, 17103632), (16, 16034655), (17, 15091440), (20, 12827724), (21, 12216880), (24, 10689770), (26, 9867480), (28, 9162660), (30, 8551816), (34, 7545720), (35, 7330128), (39, 6578320), (40, 6413862), (42, 6108440), (48, 5344885), (51, 5030480), (52, 4933740), (56, 4581330), (60, 4275908), (65, 3946992), (68, 3772860), (70, 3665064), (78, 3289160), (80, 3206931), (84, 3054220), (85, 3018288), (91, 2819280), (102, 2515240), (104, 2466870), (105, 2443376), (112, 2290665), (119, 2155920), (120, 2137954), (130, 1973496), (136, 1886430), (140, 1832532), (156, 1644580), (168, 1527110), (170, 1509144), (182, 1409640), (195, 1315664), (204, 1257620), (208, 1233435), (210, 1221688), (221, 1160880), (238, 1077960), (240, 1068977), (255, 1006096), (260, 986748), (272, 943215), (273, 939760), (280, 916266), (312, 822290), (336, 763555), (340, 754572), (357, 718640), (364, 704820), (390, 657832), (408, 628810), (420, 610844), (442, 580440), (455, 563856), (476, 538980), (510, 503048), (520, 493374), (546, 469880), (560, 458133), (595, 431184), (624, 411145), (663, 386960), (680, 377286), (691, 371280), (714, 359320), (728, 352410), (780, 328916), (816, 314405), (840, 305422), (884, 290220), (910, 281928), (952, 269490), (1020, 251524), (1040, 246687), (1092, 234940), (1105, 232176), (1190, 215592), (1326, 193480), (1360, 188643), (1365, 187952), (1382, 185640), (1428, 179660), (1456, 176205), (1547, 165840), (1560, 164458), (1680, 152711), (1768, 145110), (1785, 143728), (1820, 140964), (1904, 134745), (2040, 125762), (2073, 123760), (2184, 117470), (2210, 116088), (2380, 107796), (2652, 96740), (2730, 93976), (2764, 92820), (2856, 89830), (3094, 82920), (3120, 82229), (3315, 77392), (3455, 74256), (3536, 72555), (3570, 71864), (3640, 70482), (4080, 62881), (4146, 61880), (4368, 58735), (4420, 58044), (4641, 55280), (4760, 53898), (4837, 53040), (5304, 48370), (5460, 46988), (5528, 46410), (5712, 44915), (6188, 41460), (6630, 38696), (6910, 37128), (7140, 35932), (7280, 35241), (7735, 33168), (8292, 30940), (8840, 29022), (8983, 28560), (9282, 27640), (9520, 26949), (9674, 26520), (10365, 24752), (10608, 24185), (10920, 23494), (11056, 23205), (11747, 21840), (12376, 20730), (13260, 19348), (13820, 18564), (14280, 17966), (14511, 17680), (15470, 16584)]