81385564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{8647}}^1$

素因数の和:8845

約数の個数: 24

約数和(自身を含む): 154245728

約数和(自身を除く): 72860164

約数列:

[1, 2, 4, 13, 26, 52, 181, 362, 724, 2353, 4706, 8647, 9412, 17294, 34588, 112411, 224822, 449644, 1565107, 3130214, 6260428, 20346391, 40692782, 81385564]

約数ペア:

[(1, 81385564), (2, 40692782), (4, 20346391), (13, 6260428), (26, 3130214), (52, 1565107), (181, 449644), (362, 224822), (724, 112411), (2353, 34588), (4706, 17294), (8647, 9412)]