15439240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{12451}}^1$

素因数の和:12493

約数の個数: 32

約数和(自身を含む): 35861760

約数和(自身を除く): 20422520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 12451, 24902, 49804, 62255, 99608, 124510, 249020, 385981, 498040, 771962, 1543924, 1929905, 3087848, 3859810, 7719620, 15439240]

約数ペア:

[(1, 15439240), (2, 7719620), (4, 3859810), (5, 3087848), (8, 1929905), (10, 1543924), (20, 771962), (31, 498040), (40, 385981), (62, 249020), (124, 124510), (155, 99608), (248, 62255), (310, 49804), (620, 24902), (1240, 12451)]