7868180

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1997}}^1$

素因数の和:2203

約数の個数: 24

約数和(自身を含む): 16615368

約数和(自身を除く): 8747188

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 1997, 3940, 3994, 7988, 9985, 19970, 39940, 393409, 786818, 1573636, 1967045, 3934090, 7868180]

約数ペア:

[(1, 7868180), (2, 3934090), (4, 1967045), (5, 1573636), (10, 786818), (20, 393409), (197, 39940), (394, 19970), (788, 9985), (985, 7988), (1970, 3994), (1997, 3940)]