28704220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{33377}}^1$

素因数の和:33429

約数の個数: 24

約数和(自身を含む): 61682544

約数和(自身を除く): 32978324

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 33377, 66754, 133508, 166885, 333770, 667540, 1435211, 2870422, 5740844, 7176055, 14352110, 28704220]

約数ペア:

[(1, 28704220), (2, 14352110), (4, 7176055), (5, 5740844), (10, 2870422), (20, 1435211), (43, 667540), (86, 333770), (172, 166885), (215, 133508), (430, 66754), (860, 33377)]