21386800

素因数分解:

$2^4\times 5^2\times {\mathrm{127}}^1\times {\mathrm{421}}^1$

素因数の和:566

約数の個数: 60

約数和(自身を含む): 51909376

約数和(自身を除く): 30522576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 127, 200, 254, 400, 421, 508, 635, 842, 1016, 1270, 1684, 2032, 2105, 2540, 3175, 3368, 4210, 5080, 6350, 6736, 8420, 10160, 10525, 12700, 16840, 21050, 25400, 33680, 42100, 50800, 53467, 84200, 106934, 168400, 213868, 267335, 427736, 534670, 855472, 1069340, 1336675, 2138680, 2673350, 4277360, 5346700, 10693400, 21386800]

約数ペア:

[(1, 21386800), (2, 10693400), (4, 5346700), (5, 4277360), (8, 2673350), (10, 2138680), (16, 1336675), (20, 1069340), (25, 855472), (40, 534670), (50, 427736), (80, 267335), (100, 213868), (127, 168400), (200, 106934), (254, 84200), (400, 53467), (421, 50800), (508, 42100), (635, 33680), (842, 25400), (1016, 21050), (1270, 16840), (1684, 12700), (2032, 10525), (2105, 10160), (2540, 8420), (3175, 6736), (3368, 6350), (4210, 5080)]