165918220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{638147}}^1$

素因数の和:638169

約数の個数: 24

約数和(自身を含む): 375231024

約数和(自身を除く): 209312804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 638147, 1276294, 2552588, 3190735, 6381470, 8295911, 12762940, 16591822, 33183644, 41479555, 82959110, 165918220]

約数ペア:

[(1, 165918220), (2, 82959110), (4, 41479555), (5, 33183644), (10, 16591822), (13, 12762940), (20, 8295911), (26, 6381470), (52, 3190735), (65, 2552588), (130, 1276294), (260, 638147)]