15655280

素因数分解:

$2^4\times 5^1\times {\mathrm{195691}}^1$

素因数の和:195704

約数の個数: 20

約数和(自身を含む): 36398712

約数和(自身を除く): 20743432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 195691, 391382, 782764, 978455, 1565528, 1956910, 3131056, 3913820, 7827640, 15655280]

約数ペア:

[(1, 15655280), (2, 7827640), (4, 3913820), (5, 3131056), (8, 1956910), (10, 1565528), (16, 978455), (20, 782764), (40, 391382), (80, 195691)]