644996

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 1251936

約数和(自身を除く): 606940

約数列:

[1, 2, 4, 11, 22, 44, 107, 137, 214, 274, 428, 548, 1177, 1507, 2354, 3014, 4708, 6028, 14659, 29318, 58636, 161249, 322498, 644996]

約数ペア:

[(1, 644996), (2, 322498), (4, 161249), (11, 58636), (22, 29318), (44, 14659), (107, 6028), (137, 4708), (214, 3014), (274, 2354), (428, 1507), (548, 1177)]