646400690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{292489}}^1$

素因数の和:292526

約数の個数: 32

約数和(自身を含む): 1326734640

約数和(自身を除く): 680333950

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 292489, 584978, 1462445, 2924890, 3802357, 4972313, 7604714, 9944626, 19011785, 24861565, 38023570, 49723130, 64640069, 129280138, 323200345, 646400690]

約数ペア:

[(1, 646400690), (2, 323200345), (5, 129280138), (10, 64640069), (13, 49723130), (17, 38023570), (26, 24861565), (34, 19011785), (65, 9944626), (85, 7604714), (130, 4972313), (170, 3802357), (221, 2924890), (442, 1462445), (1105, 584978), (2210, 292489)]