20503315

素因数分解:

$5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{1579}}^1$

素因数の和:1651

約数の個数: 24

約数和(自身を含む): 29179440

約数和(自身を除く): 8676125

約数列:

[1, 5, 7, 35, 49, 53, 245, 265, 371, 1579, 1855, 2597, 7895, 11053, 12985, 55265, 77371, 83687, 386855, 418435, 585809, 2929045, 4100663, 20503315]

約数ペア:

[(1, 20503315), (5, 4100663), (7, 2929045), (35, 585809), (49, 418435), (53, 386855), (245, 83687), (265, 77371), (371, 55265), (1579, 12985), (1855, 11053), (2597, 7895)]