81220238

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1$

素因数の和:680

約数の個数: 32

約数和(自身を含む): 136311552

約数和(自身を除く): 55091314

約数列:

[1, 2, 11, 22, 73, 103, 146, 206, 491, 803, 982, 1133, 1606, 2266, 5401, 7519, 10802, 15038, 35843, 50573, 71686, 82709, 101146, 165418, 394273, 556303, 788546, 1112606, 3691829, 7383658, 40610119, 81220238]

約数ペア:

[(1, 81220238), (2, 40610119), (11, 7383658), (22, 3691829), (73, 1112606), (103, 788546), (146, 556303), (206, 394273), (491, 165418), (803, 101146), (982, 82709), (1133, 71686), (1606, 50573), (2266, 35843), (5401, 15038), (7519, 10802)]