291228580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{1471}}^1$

素因数の和:2020

約数の個数: 48

約数和(自身を含む): 645442560

約数和(自身を除く): 354213980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 521, 1042, 1471, 2084, 2605, 2942, 5210, 5884, 7355, 9899, 10420, 14710, 19798, 27949, 29420, 39596, 49495, 55898, 98990, 111796, 139745, 197980, 279490, 558980, 766391, 1532782, 3065564, 3831955, 7663910, 14561429, 15327820, 29122858, 58245716, 72807145, 145614290, 291228580]

約数ペア:

[(1, 291228580), (2, 145614290), (4, 72807145), (5, 58245716), (10, 29122858), (19, 15327820), (20, 14561429), (38, 7663910), (76, 3831955), (95, 3065564), (190, 1532782), (380, 766391), (521, 558980), (1042, 279490), (1471, 197980), (2084, 139745), (2605, 111796), (2942, 98990), (5210, 55898), (5884, 49495), (7355, 39596), (9899, 29420), (10420, 27949), (14710, 19798)]