21244120

素因数分解:

$2^3\times 5^1\times {\mathrm{531103}}^1$

素因数の和:531114

約数の個数: 16

約数和(自身を含む): 47799360

約数和(自身を除く): 26555240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 531103, 1062206, 2124412, 2655515, 4248824, 5311030, 10622060, 21244120]

約数ペア:

[(1, 21244120), (2, 10622060), (4, 5311030), (5, 4248824), (8, 2655515), (10, 2124412), (20, 1062206), (40, 531103)]