28628180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{204487}}^1$

素因数の和:204503

約数の個数: 24

約数和(自身を含む): 68707968

約数和(自身を除く): 40079788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 204487, 408974, 817948, 1022435, 1431409, 2044870, 2862818, 4089740, 5725636, 7157045, 14314090, 28628180]

約数ペア:

[(1, 28628180), (2, 14314090), (4, 7157045), (5, 5725636), (7, 4089740), (10, 2862818), (14, 2044870), (20, 1431409), (28, 1022435), (35, 817948), (70, 408974), (140, 204487)]