20321790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{12781}}^1$

素因数の和:12844

約数の個数: 32

約数和(自身を含む): 49696416

約数和(自身を除く): 29374626

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590, 12781, 25562, 38343, 63905, 76686, 127810, 191715, 383430, 677393, 1354786, 2032179, 3386965, 4064358, 6773930, 10160895, 20321790]

約数ペア:

[(1, 20321790), (2, 10160895), (3, 6773930), (5, 4064358), (6, 3386965), (10, 2032179), (15, 1354786), (30, 677393), (53, 383430), (106, 191715), (159, 127810), (265, 76686), (318, 63905), (530, 38343), (795, 25562), (1590, 12781)]