21000612304

素因数分解:

$2^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1\times {\mathrm{313}}^1$

素因数の和:597

約数の個数: 160

約数和(自身を含む): 48442613760

約数和(自身を除く): 27442001456

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 53, 56, 89, 106, 112, 127, 178, 212, 254, 313, 356, 371, 424, 508, 623, 626, 712, 742, 848, 889, 1016, 1246, 1252, 1424, 1484, 1778, 2032, 2191, 2492, 2504, 2968, 3556, 4382, 4717, 4984, 5008, 5936, 6731, 7112, 8764, 9434, 9968, 11303, 13462, 14224, 16589, 17528, 18868, 22606, 26924, 27857, 33019, 33178, 35056, 37736, 39751, 45212, 47117, 53848, 55714, 66038, 66356, 75472, 79121, 79502, 90424, 94234, 107696, 111428, 116123, 132076, 132712, 158242, 159004, 180848, 188468, 194999, 222856, 232246, 264152, 265424, 278257, 316484, 318008, 376936, 389998, 445712, 464492, 528304, 556514, 599059, 632968, 636016, 753872, 779996, 928984, 1113028, 1198118, 1265936, 1476421, 1559992, 1857968, 2106803, 2226056, 2396236, 2952842, 3119984, 3537839, 4193413, 4213606, 4452112, 4792472, 5905684, 7075678, 8386826, 8427212, 9584944, 10334947, 11811368, 14151356, 14747621, 16773652, 16854424, 20669894, 23622736, 24764873, 28302712, 29495242, 33547304, 33708848, 41339788, 49529746, 56605424, 58990484, 67094608, 82679576, 99059492, 117980968, 165359152, 187505467, 198118984, 235961936, 375010934, 396237968, 750021868, 1312538269, 1500043736, 2625076538, 3000087472, 5250153076, 10500306152, 21000612304]

約数ペア:

[(1, 21000612304), (2, 10500306152), (4, 5250153076), (7, 3000087472), (8, 2625076538), (14, 1500043736), (16, 1312538269), (28, 750021868), (53, 396237968), (56, 375010934), (89, 235961936), (106, 198118984), (112, 187505467), (127, 165359152), (178, 117980968), (212, 99059492), (254, 82679576), (313, 67094608), (356, 58990484), (371, 56605424), (424, 49529746), (508, 41339788), (623, 33708848), (626, 33547304), (712, 29495242), (742, 28302712), (848, 24764873), (889, 23622736), (1016, 20669894), (1246, 16854424), (1252, 16773652), (1424, 14747621), (1484, 14151356), (1778, 11811368), (2032, 10334947), (2191, 9584944), (2492, 8427212), (2504, 8386826), (2968, 7075678), (3556, 5905684), (4382, 4792472), (4717, 4452112), (4984, 4213606), (5008, 4193413), (5936, 3537839), (6731, 3119984), (7112, 2952842), (8764, 2396236), (9434, 2226056), (9968, 2106803), (11303, 1857968), (13462, 1559992), (14224, 1476421), (16589, 1265936), (17528, 1198118), (18868, 1113028), (22606, 928984), (26924, 779996), (27857, 753872), (33019, 636016), (33178, 632968), (35056, 599059), (37736, 556514), (39751, 528304), (45212, 464492), (47117, 445712), (53848, 389998), (55714, 376936), (66038, 318008), (66356, 316484), (75472, 278257), (79121, 265424), (79502, 264152), (90424, 232246), (94234, 222856), (107696, 194999), (111428, 188468), (116123, 180848), (132076, 159004), (132712, 158242)]