21651604

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{32029}}^1$

素因数の和:32059

約数の個数: 18

約数和(自身を含む): 41030430

約数和(自身を除く): 19378826

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 32029, 64058, 128116, 416377, 832754, 1665508, 5412901, 10825802, 21651604]

約数ペア:

[(1, 21651604), (2, 10825802), (4, 5412901), (13, 1665508), (26, 832754), (52, 416377), (169, 128116), (338, 64058), (676, 32029)]