64908220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249647}}^1$

素因数の和:249669

約数の個数: 24

約数和(自身を含む): 146793024

約数和(自身を除く): 81884804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 249647, 499294, 998588, 1248235, 2496470, 3245411, 4992940, 6490822, 12981644, 16227055, 32454110, 64908220]

約数ペア:

[(1, 64908220), (2, 32454110), (4, 16227055), (5, 12981644), (10, 6490822), (13, 4992940), (20, 3245411), (26, 2496470), (52, 1248235), (65, 998588), (130, 499294), (260, 249647)]