8151780400

素因数分解:

$2^4\times 5^2\times {\mathrm{20379451}}^1$

素因数の和:20379469

約数の個数: 30

約数和(自身を含む): 19584653372

約数和(自身を除く): 11432872972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 20379451, 40758902, 81517804, 101897255, 163035608, 203794510, 326071216, 407589020, 509486275, 815178040, 1018972550, 1630356080, 2037945100, 4075890200, 8151780400]

約数ペア:

[(1, 8151780400), (2, 4075890200), (4, 2037945100), (5, 1630356080), (8, 1018972550), (10, 815178040), (16, 509486275), (20, 407589020), (25, 326071216), (40, 203794510), (50, 163035608), (80, 101897255), (100, 81517804), (200, 40758902), (400, 20379451)]