21207604

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{2957}}^1$

素因数の和:3135

約数の個数: 24

約数和(自身を含む): 40749408

約数和(自身を除く): 19541804

約数列:

[1, 2, 4, 11, 22, 44, 163, 326, 652, 1793, 2957, 3586, 5914, 7172, 11828, 32527, 65054, 130108, 481991, 963982, 1927964, 5301901, 10603802, 21207604]

約数ペア:

[(1, 21207604), (2, 10603802), (4, 5301901), (11, 1927964), (22, 963982), (44, 481991), (163, 130108), (326, 65054), (652, 32527), (1793, 11828), (2957, 7172), (3586, 5914)]