21459739

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1733}}^1$

素因数の和:1830

約数の個数: 16

約数和(自身を含む): 25801920

約数和(自身を除く): 4342181

約数列:

[1, 7, 29, 61, 203, 427, 1733, 1769, 12131, 12383, 50257, 105713, 351799, 739991, 3065677, 21459739]

約数ペア:

[(1, 21459739), (7, 3065677), (29, 739991), (61, 351799), (203, 105713), (427, 50257), (1733, 12383), (1769, 12131)]