15380020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{10831}}^1$

素因数の和:10911

約数の個数: 24

約数和(自身を含む): 32755968

約数和(自身を除く): 17375948

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 10831, 21662, 43324, 54155, 108310, 216620, 769001, 1538002, 3076004, 3845005, 7690010, 15380020]

約数ペア:

[(1, 15380020), (2, 7690010), (4, 3845005), (5, 3076004), (10, 1538002), (20, 769001), (71, 216620), (142, 108310), (284, 54155), (355, 43324), (710, 21662), (1420, 10831)]