9920104990

素因数分解:

$2^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2498767}}^1$

素因数の和:2499171

約数の個数: 16

約数和(自身を含む): 17901173952

約数和(自身を除く): 7981068962

約数列:

[1, 2, 5, 10, 397, 794, 1985, 3970, 2498767, 4997534, 12493835, 24987670, 992010499, 1984020998, 4960052495, 9920104990]

約数ペア:

[(1, 9920104990), (2, 4960052495), (5, 1984020998), (10, 992010499), (397, 24987670), (794, 12493835), (1985, 4997534), (3970, 2498767)]