159557680

素因数分解:

$2^4\times 5^1\times {\mathrm{1994471}}^1$

素因数の和:1994484

約数の個数: 20

約数和(自身を含む): 370971792

約数和(自身を除く): 211414112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1994471, 3988942, 7977884, 9972355, 15955768, 19944710, 31911536, 39889420, 79778840, 159557680]

約数ペア:

[(1, 159557680), (2, 79778840), (4, 39889420), (5, 31911536), (8, 19944710), (10, 15955768), (16, 9972355), (20, 7977884), (40, 3988942), (80, 1994471)]