16687280

素因数分解:

$2^4\times 5^1\times {\mathrm{208591}}^1$

素因数の和:208604

約数の個数: 20

約数和(自身を含む): 38798112

約数和(自身を除く): 22110832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 208591, 417182, 834364, 1042955, 1668728, 2085910, 3337456, 4171820, 8343640, 16687280]

約数ペア:

[(1, 16687280), (2, 8343640), (4, 4171820), (5, 3337456), (8, 2085910), (10, 1668728), (16, 1042955), (20, 834364), (40, 417182), (80, 208591)]