21581716

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{2293}}^1$

素因数の和:2491

約数の個数: 24

約数和(自身を含む): 40915784

約数和(自身を除く): 19334068

約数列:

[1, 2, 4, 13, 26, 52, 181, 362, 724, 2293, 2353, 4586, 4706, 9172, 9412, 29809, 59618, 119236, 415033, 830066, 1660132, 5395429, 10790858, 21581716]

約数ペア:

[(1, 21581716), (2, 10790858), (4, 5395429), (13, 1660132), (26, 830066), (52, 415033), (181, 119236), (362, 59618), (724, 29809), (2293, 9412), (2353, 9172), (4586, 4706)]