20731657240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{523}}^1\times {\mathrm{2113}}^1$

素因数の和:2721

約数の個数: 128

約数和(自身を含む): 54234754560

約数和(自身を除く): 33503097320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 268, 280, 335, 469, 523, 536, 670, 938, 1046, 1340, 1876, 2092, 2113, 2345, 2615, 2680, 3661, 3752, 4184, 4226, 4690, 5230, 7322, 8452, 9380, 10460, 10565, 14644, 14791, 16904, 18305, 18760, 20920, 21130, 29288, 29582, 35041, 36610, 42260, 59164, 70082, 73220, 73955, 84520, 118328, 140164, 141571, 146440, 147910, 175205, 245287, 280328, 283142, 295820, 350410, 490574, 566284, 591640, 700820, 707855, 981148, 990997, 1105099, 1132568, 1226435, 1401640, 1415710, 1962296, 1981994, 2210198, 2452870, 2831420, 3963988, 4420396, 4905740, 4954985, 5525495, 5662840, 7735693, 7927976, 8840792, 9811480, 9909970, 11050990, 15471386, 19819940, 22101980, 30942772, 38678465, 39639880, 44203960, 61885544, 74041633, 77356930, 148083266, 154713860, 296166532, 309427720, 370208165, 518291431, 592333064, 740416330, 1036582862, 1480832660, 2073165724, 2591457155, 2961665320, 4146331448, 5182914310, 10365828620, 20731657240]

約数ペア:

[(1, 20731657240), (2, 10365828620), (4, 5182914310), (5, 4146331448), (7, 2961665320), (8, 2591457155), (10, 2073165724), (14, 1480832660), (20, 1036582862), (28, 740416330), (35, 592333064), (40, 518291431), (56, 370208165), (67, 309427720), (70, 296166532), (134, 154713860), (140, 148083266), (268, 77356930), (280, 74041633), (335, 61885544), (469, 44203960), (523, 39639880), (536, 38678465), (670, 30942772), (938, 22101980), (1046, 19819940), (1340, 15471386), (1876, 11050990), (2092, 9909970), (2113, 9811480), (2345, 8840792), (2615, 7927976), (2680, 7735693), (3661, 5662840), (3752, 5525495), (4184, 4954985), (4226, 4905740), (4690, 4420396), (5230, 3963988), (7322, 2831420), (8452, 2452870), (9380, 2210198), (10460, 1981994), (10565, 1962296), (14644, 1415710), (14791, 1401640), (16904, 1226435), (18305, 1132568), (18760, 1105099), (20920, 990997), (21130, 981148), (29288, 707855), (29582, 700820), (35041, 591640), (36610, 566284), (42260, 490574), (59164, 350410), (70082, 295820), (73220, 283142), (73955, 280328), (84520, 245287), (118328, 175205), (140164, 147910), (141571, 146440)]