20980882

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{1973}}^1$

素因数の和:2397

約数の個数: 16

約数和(自身を含む): 33992280

約数和(自身を除く): 13011398

約数列:

[1, 2, 13, 26, 409, 818, 1973, 3946, 5317, 10634, 25649, 51298, 806957, 1613914, 10490441, 20980882]

約数ペア:

[(1, 20980882), (2, 10490441), (13, 1613914), (26, 806957), (409, 51298), (818, 25649), (1973, 10634), (3946, 5317)]