18478480

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7451}}^1$

素因数の和:7495

約数の個数: 40

約数和(自身を含む): 44354304

約数和(自身を除く): 25875824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7451, 14902, 29804, 37255, 59608, 74510, 119216, 149020, 230981, 298040, 461962, 596080, 923924, 1154905, 1847848, 2309810, 3695696, 4619620, 9239240, 18478480]

約数ペア:

[(1, 18478480), (2, 9239240), (4, 4619620), (5, 3695696), (8, 2309810), (10, 1847848), (16, 1154905), (20, 923924), (31, 596080), (40, 461962), (62, 298040), (80, 230981), (124, 149020), (155, 119216), (248, 74510), (310, 59608), (496, 37255), (620, 29804), (1240, 14902), (2480, 7451)]