20805216478

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{283}}^1\times {\mathrm{3779}}^1$

素因数の和:4272

約数の個数: 32

約数和(自身を含む): 31999484160

約数和(自身を除く): 11194267682

約数列:

[1, 2, 71, 137, 142, 274, 283, 566, 3779, 7558, 9727, 19454, 20093, 38771, 40186, 77542, 268309, 517723, 536618, 1035446, 1069457, 2138914, 2752741, 5505482, 36758333, 73516666, 75931447, 146515609, 151862894, 293031218, 10402608239, 20805216478]

約数ペア:

[(1, 20805216478), (2, 10402608239), (71, 293031218), (137, 151862894), (142, 146515609), (274, 75931447), (283, 73516666), (566, 36758333), (3779, 5505482), (7558, 2752741), (9727, 2138914), (19454, 1069457), (20093, 1035446), (38771, 536618), (40186, 517723), (77542, 268309)]