21441420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:70

約数の個数: 432

約数和(自身を含む): 94112928

約数和(自身を除く): 72671508

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 18, 20, 21, 22, 26, 28, 30, 33, 34, 35, 36, 39, 42, 44, 45, 49, 51, 52, 55, 60, 63, 65, 66, 68, 70, 77, 78, 84, 85, 90, 91, 98, 99, 102, 105, 110, 117, 119, 126, 130, 132, 140, 143, 147, 153, 154, 156, 165, 170, 180, 182, 187, 195, 196, 198, 204, 210, 220, 221, 231, 234, 238, 245, 252, 255, 260, 273, 286, 294, 306, 308, 315, 330, 340, 357, 364, 374, 385, 390, 396, 420, 429, 441, 442, 455, 462, 468, 476, 490, 495, 510, 539, 546, 561, 572, 585, 588, 595, 612, 630, 637, 660, 663, 693, 714, 715, 735, 748, 765, 770, 780, 819, 833, 858, 882, 884, 910, 924, 935, 980, 990, 1001, 1020, 1071, 1078, 1092, 1105, 1122, 1155, 1170, 1190, 1260, 1274, 1287, 1309, 1326, 1365, 1386, 1428, 1430, 1470, 1530, 1540, 1547, 1617, 1638, 1666, 1683, 1716, 1764, 1785, 1820, 1870, 1911, 1980, 1989, 2002, 2142, 2145, 2156, 2205, 2210, 2244, 2310, 2340, 2380, 2431, 2499, 2548, 2574, 2618, 2652, 2695, 2730, 2772, 2805, 2860, 2940, 3003, 3060, 3094, 3185, 3234, 3276, 3315, 3332, 3366, 3465, 3570, 3740, 3822, 3927, 3978, 4004, 4095, 4165, 4284, 4290, 4410, 4420, 4620, 4641, 4851, 4862, 4998, 5005, 5148, 5236, 5355, 5390, 5460, 5610, 5733, 6006, 6188, 6370, 6435, 6468, 6545, 6630, 6732, 6930, 7007, 7140, 7293, 7497, 7644, 7735, 7854, 7956, 8085, 8190, 8330, 8415, 8580, 8820, 9009, 9163, 9282, 9555, 9702, 9724, 9945, 9996, 10010, 10710, 10780, 10829, 11220, 11466, 11781, 12012, 12155, 12495, 12740, 12870, 13090, 13260, 13860, 13923, 14014, 14586, 14994, 15015, 15470, 15708, 16170, 16380, 16660, 16830, 17017, 18018, 18326, 18564, 19110, 19404, 19635, 19890, 20020, 21021, 21420, 21658, 21879, 22932, 23205, 23562, 24255, 24310, 24990, 25740, 26180, 27489, 27846, 28028, 28665, 29172, 29988, 30030, 30940, 32340, 32487, 33660, 34034, 35035, 36036, 36465, 36652, 37485, 38220, 39270, 39780, 42042, 43316, 43758, 45045, 45815, 46410, 47124, 48510, 48620, 49980, 51051, 54145, 54978, 55692, 57330, 58905, 60060, 63063, 64974, 68068, 69615, 70070, 72930, 74970, 78540, 82467, 84084, 85085, 87516, 90090, 91630, 92820, 97020, 97461, 102102, 105105, 108290, 109395, 109956, 114660, 117810, 119119, 126126, 129948, 137445, 139230, 140140, 145860, 149940, 153153, 162435, 164934, 170170, 180180, 183260, 194922, 204204, 210210, 216580, 218790, 235620, 238238, 252252, 255255, 274890, 278460, 306306, 315315, 324870, 329868, 340340, 357357, 389844, 412335, 420420, 437580, 476476, 487305, 510510, 549780, 595595, 612612, 630630, 649740, 714714, 765765, 824670, 974610, 1021020, 1072071, 1191190, 1261260, 1429428, 1531530, 1649340, 1786785, 1949220, 2144142, 2382380, 3063060, 3573570, 4288284, 5360355, 7147140, 10720710, 21441420]

約数ペア:

[(1, 21441420), (2, 10720710), (3, 7147140), (4, 5360355), (5, 4288284), (6, 3573570), (7, 3063060), (9, 2382380), (10, 2144142), (11, 1949220), (12, 1786785), (13, 1649340), (14, 1531530), (15, 1429428), (17, 1261260), (18, 1191190), (20, 1072071), (21, 1021020), (22, 974610), (26, 824670), (28, 765765), (30, 714714), (33, 649740), (34, 630630), (35, 612612), (36, 595595), (39, 549780), (42, 510510), (44, 487305), (45, 476476), (49, 437580), (51, 420420), (52, 412335), (55, 389844), (60, 357357), (63, 340340), (65, 329868), (66, 324870), (68, 315315), (70, 306306), (77, 278460), (78, 274890), (84, 255255), (85, 252252), (90, 238238), (91, 235620), (98, 218790), (99, 216580), (102, 210210), (105, 204204), (110, 194922), (117, 183260), (119, 180180), (126, 170170), (130, 164934), (132, 162435), (140, 153153), (143, 149940), (147, 145860), (153, 140140), (154, 139230), (156, 137445), (165, 129948), (170, 126126), (180, 119119), (182, 117810), (187, 114660), (195, 109956), (196, 109395), (198, 108290), (204, 105105), (210, 102102), (220, 97461), (221, 97020), (231, 92820), (234, 91630), (238, 90090), (245, 87516), (252, 85085), (255, 84084), (260, 82467), (273, 78540), (286, 74970), (294, 72930), (306, 70070), (308, 69615), (315, 68068), (330, 64974), (340, 63063), (357, 60060), (364, 58905), (374, 57330), (385, 55692), (390, 54978), (396, 54145), (420, 51051), (429, 49980), (441, 48620), (442, 48510), (455, 47124), (462, 46410), (468, 45815), (476, 45045), (490, 43758), (495, 43316), (510, 42042), (539, 39780), (546, 39270), (561, 38220), (572, 37485), (585, 36652), (588, 36465), (595, 36036), (612, 35035), (630, 34034), (637, 33660), (660, 32487), (663, 32340), (693, 30940), (714, 30030), (715, 29988), (735, 29172), (748, 28665), (765, 28028), (770, 27846), (780, 27489), (819, 26180), (833, 25740), (858, 24990), (882, 24310), (884, 24255), (910, 23562), (924, 23205), (935, 22932), (980, 21879), (990, 21658), (1001, 21420), (1020, 21021), (1071, 20020), (1078, 19890), (1092, 19635), (1105, 19404), (1122, 19110), (1155, 18564), (1170, 18326), (1190, 18018), (1260, 17017), (1274, 16830), (1287, 16660), (1309, 16380), (1326, 16170), (1365, 15708), (1386, 15470), (1428, 15015), (1430, 14994), (1470, 14586), (1530, 14014), (1540, 13923), (1547, 13860), (1617, 13260), (1638, 13090), (1666, 12870), (1683, 12740), (1716, 12495), (1764, 12155), (1785, 12012), (1820, 11781), (1870, 11466), (1911, 11220), (1980, 10829), (1989, 10780), (2002, 10710), (2142, 10010), (2145, 9996), (2156, 9945), (2205, 9724), (2210, 9702), (2244, 9555), (2310, 9282), (2340, 9163), (2380, 9009), (2431, 8820), (2499, 8580), (2548, 8415), (2574, 8330), (2618, 8190), (2652, 8085), (2695, 7956), (2730, 7854), (2772, 7735), (2805, 7644), (2860, 7497), (2940, 7293), (3003, 7140), (3060, 7007), (3094, 6930), (3185, 6732), (3234, 6630), (3276, 6545), (3315, 6468), (3332, 6435), (3366, 6370), (3465, 6188), (3570, 6006), (3740, 5733), (3822, 5610), (3927, 5460), (3978, 5390), (4004, 5355), (4095, 5236), (4165, 5148), (4284, 5005), (4290, 4998), (4410, 4862), (4420, 4851), (4620, 4641)]