663650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1021}}^1$

素因数の和:1046

約数の個数: 24

約数和(自身を含む): 1330644

約数和(自身を除く): 666994

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 1021, 2042, 5105, 10210, 13273, 25525, 26546, 51050, 66365, 132730, 331825, 663650]

約数ペア:

[(1, 663650), (2, 331825), (5, 132730), (10, 66365), (13, 51050), (25, 26546), (26, 25525), (50, 13273), (65, 10210), (130, 5105), (325, 2042), (650, 1021)]