31393780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{142699}}^1$

素因数の和:142719

約数の個数: 24

約数和(自身を含む): 71920800

約数和(自身を除く): 40527020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 142699, 285398, 570796, 713495, 1426990, 1569689, 2853980, 3139378, 6278756, 7848445, 15696890, 31393780]

約数ペア:

[(1, 31393780), (2, 15696890), (4, 7848445), (5, 6278756), (10, 3139378), (11, 2853980), (20, 1569689), (22, 1426990), (44, 713495), (55, 570796), (110, 285398), (220, 142699)]