81811564

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{223}}^1\times {\mathrm{2237}}^1$

素因数の和:2505

約数の個数: 24

約数和(自身を含む): 147385728

約数和(自身を除く): 65574164

約数列:

[1, 2, 4, 41, 82, 164, 223, 446, 892, 2237, 4474, 8948, 9143, 18286, 36572, 91717, 183434, 366868, 498851, 997702, 1995404, 20452891, 40905782, 81811564]

約数ペア:

[(1, 81811564), (2, 40905782), (4, 20452891), (41, 1995404), (82, 997702), (164, 498851), (223, 366868), (446, 183434), (892, 91717), (2237, 36572), (4474, 18286), (8948, 9143)]