21911790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{13781}}^1$

素因数の和:13844

約数の個数: 32

約数和(自身を含む): 53584416

約数和(自身を除く): 31672626

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590, 13781, 27562, 41343, 68905, 82686, 137810, 206715, 413430, 730393, 1460786, 2191179, 3651965, 4382358, 7303930, 10955895, 21911790]

約数ペア:

[(1, 21911790), (2, 10955895), (3, 7303930), (5, 4382358), (6, 3651965), (10, 2191179), (15, 1460786), (30, 730393), (53, 413430), (106, 206715), (159, 137810), (265, 82686), (318, 68905), (530, 41343), (795, 27562), (1590, 13781)]