28202620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19861}}^1$

素因数の和:19941

約数の個数: 24

約数和(自身を含む): 60062688

約数和(自身を除く): 31860068

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 19861, 39722, 79444, 99305, 198610, 397220, 1410131, 2820262, 5640524, 7050655, 14101310, 28202620]

約数ペア:

[(1, 28202620), (2, 14101310), (4, 7050655), (5, 5640524), (10, 2820262), (20, 1410131), (71, 397220), (142, 198610), (284, 99305), (355, 79444), (710, 39722), (1420, 19861)]