21913493

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{1721}}^1$

素因数の和:1852

約数の個数: 16

約数和(自身を含む): 26780544

約数和(自身を除く): 4867051

約数列:

[1, 7, 17, 107, 119, 749, 1721, 1819, 12047, 12733, 29257, 184147, 204799, 1289029, 3130499, 21913493]

約数ペア:

[(1, 21913493), (7, 3130499), (17, 1289029), (107, 204799), (119, 184147), (749, 29257), (1721, 12733), (1819, 12047)]