21207056

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101957}}^1$

素因数の和:101978

約数の個数: 20

約数和(自身を含む): 44249772

約数和(自身を除く): 23042716

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101957, 203914, 407828, 815656, 1325441, 1631312, 2650882, 5301764, 10603528, 21207056]

約数ペア:

[(1, 21207056), (2, 10603528), (4, 5301764), (8, 2650882), (13, 1631312), (16, 1325441), (26, 815656), (52, 407828), (104, 203914), (208, 101957)]