2017600400

素因数分解:

$2^4\times 5^2\times {\mathrm{421}}^1\times {\mathrm{11981}}^1$

素因数の和:12420

約数の個数: 60

約数和(自身を含む): 4859204244

約数和(自身を除く): 2841603844

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 421, 842, 1684, 2105, 3368, 4210, 6736, 8420, 10525, 11981, 16840, 21050, 23962, 33680, 42100, 47924, 59905, 84200, 95848, 119810, 168400, 191696, 239620, 299525, 479240, 599050, 958480, 1198100, 2396200, 4792400, 5044001, 10088002, 20176004, 25220005, 40352008, 50440010, 80704016, 100880020, 126100025, 201760040, 252200050, 403520080, 504400100, 1008800200, 2017600400]

約数ペア:

[(1, 2017600400), (2, 1008800200), (4, 504400100), (5, 403520080), (8, 252200050), (10, 201760040), (16, 126100025), (20, 100880020), (25, 80704016), (40, 50440010), (50, 40352008), (80, 25220005), (100, 20176004), (200, 10088002), (400, 5044001), (421, 4792400), (842, 2396200), (1684, 1198100), (2105, 958480), (3368, 599050), (4210, 479240), (6736, 299525), (8420, 239620), (10525, 191696), (11981, 168400), (16840, 119810), (21050, 95848), (23962, 84200), (33680, 59905), (42100, 47924)]