21906508

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{421279}}^1$

素因数の和:421296

約数の個数: 12

約数和(自身を含む): 41285440

約数和(自身を除く): 19378932

約数列:

[1, 2, 4, 13, 26, 52, 421279, 842558, 1685116, 5476627, 10953254, 21906508]

約数ペア:

[(1, 21906508), (2, 10953254), (4, 5476627), (13, 1685116), (26, 842558), (52, 421279)]