20258900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^2\times {\mathrm{701}}^1$

素因数の和:749

約数の個数: 54

約数和(自身を含む): 46766538

約数和(自身を除く): 26507638

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 289, 340, 425, 578, 701, 850, 1156, 1402, 1445, 1700, 2804, 2890, 3505, 5780, 7010, 7225, 11917, 14020, 14450, 17525, 23834, 28900, 35050, 47668, 59585, 70100, 119170, 202589, 238340, 297925, 405178, 595850, 810356, 1012945, 1191700, 2025890, 4051780, 5064725, 10129450, 20258900]

約数ペア:

[(1, 20258900), (2, 10129450), (4, 5064725), (5, 4051780), (10, 2025890), (17, 1191700), (20, 1012945), (25, 810356), (34, 595850), (50, 405178), (68, 297925), (85, 238340), (100, 202589), (170, 119170), (289, 70100), (340, 59585), (425, 47668), (578, 35050), (701, 28900), (850, 23834), (1156, 17525), (1402, 14450), (1445, 14020), (1700, 11917), (2804, 7225), (2890, 7010), (3505, 5780)]