218491640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{15131}}^1$

素因数の和:15180

約数の個数: 48

約数和(自身を含む): 518876280

約数和(自身を除く): 300384640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1444, 1805, 2888, 3610, 7220, 14440, 15131, 30262, 60524, 75655, 121048, 151310, 287489, 302620, 574978, 605240, 1149956, 1437445, 2299912, 2874890, 5462291, 5749780, 10924582, 11499560, 21849164, 27311455, 43698328, 54622910, 109245820, 218491640]

約数ペア:

[(1, 218491640), (2, 109245820), (4, 54622910), (5, 43698328), (8, 27311455), (10, 21849164), (19, 11499560), (20, 10924582), (38, 5749780), (40, 5462291), (76, 2874890), (95, 2299912), (152, 1437445), (190, 1149956), (361, 605240), (380, 574978), (722, 302620), (760, 287489), (1444, 151310), (1805, 121048), (2888, 75655), (3610, 60524), (7220, 30262), (14440, 15131)]