18955895

素因数分解:

$5^1\times 7^4\times {\mathrm{1579}}^1$

素因数の和:1612

約数の個数: 20

約数和(自身を含む): 26553480

約数和(自身を除く): 7597585

約数列:

[1, 5, 7, 35, 49, 245, 343, 1579, 1715, 2401, 7895, 11053, 12005, 55265, 77371, 386855, 541597, 2707985, 3791179, 18955895]

約数ペア:

[(1, 18955895), (5, 3791179), (7, 2707985), (35, 541597), (49, 386855), (245, 77371), (343, 55265), (1579, 12005), (1715, 11053), (2401, 7895)]