81264620

素因数分解:

$2^2\times 5^1\times {\mathrm{1567}}^1\times {\mathrm{2593}}^1$

素因数の和:4169

約数の個数: 24

約数和(自身を含む): 170830464

約数和(自身を除く): 89565844

約数列:

[1, 2, 4, 5, 10, 20, 1567, 2593, 3134, 5186, 6268, 7835, 10372, 12965, 15670, 25930, 31340, 51860, 4063231, 8126462, 16252924, 20316155, 40632310, 81264620]

約数ペア:

[(1, 81264620), (2, 40632310), (4, 20316155), (5, 16252924), (10, 8126462), (20, 4063231), (1567, 51860), (2593, 31340), (3134, 25930), (5186, 15670), (6268, 12965), (7835, 10372)]