21252620

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1861}}^1$

素因数の和:2441

約数の個数: 24

約数和(自身を含む): 44732688

約数和(自身を除く): 23480068

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 1861, 2284, 2855, 3722, 5710, 7444, 9305, 11420, 18610, 37220, 1062631, 2125262, 4250524, 5313155, 10626310, 21252620]

約数ペア:

[(1, 21252620), (2, 10626310), (4, 5313155), (5, 4250524), (10, 2125262), (20, 1062631), (571, 37220), (1142, 18610), (1861, 11420), (2284, 9305), (2855, 7444), (3722, 5710)]