79216360

素因数分解:

$2^3\times 5^1\times {\mathrm{1980409}}^1$

素因数の和:1980420

約数の個数: 16

約数和(自身を含む): 178236900

約数和(自身を除く): 99020540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1980409, 3960818, 7921636, 9902045, 15843272, 19804090, 39608180, 79216360]

約数ペア:

[(1, 79216360), (2, 39608180), (4, 19804090), (5, 15843272), (8, 9902045), (10, 7921636), (20, 3960818), (40, 1980409)]