21187661

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{3907}}^1$

素因数の和:3964

約数の個数: 16

約数和(自身を含む): 25323840

約数和(自身を除く): 4136179

約数列:

[1, 11, 17, 29, 187, 319, 493, 3907, 5423, 42977, 66419, 113303, 730609, 1246333, 1926151, 21187661]

約数ペア:

[(1, 21187661), (11, 1926151), (17, 1246333), (29, 730609), (187, 113303), (319, 66419), (493, 42977), (3907, 5423)]