21707399

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1753}}^1$

素因数の和:1850

約数の個数: 16

約数和(自身を含む): 26099520

約数和(自身を除く): 4392121

約数列:

[1, 7, 29, 61, 203, 427, 1753, 1769, 12271, 12383, 50837, 106933, 355859, 748531, 3101057, 21707399]

約数ペア:

[(1, 21707399), (7, 3101057), (29, 748531), (61, 355859), (203, 106933), (427, 50837), (1753, 12383), (1769, 12271)]