81147856

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{123701}}^1$

素因数の和:123750

約数の個数: 20

約数和(自身を含む): 161060004

約数和(自身を除く): 79912148

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 123701, 247402, 494804, 989608, 1979216, 5071741, 10143482, 20286964, 40573928, 81147856]

約数ペア:

[(1, 81147856), (2, 40573928), (4, 20286964), (8, 10143482), (16, 5071741), (41, 1979216), (82, 989608), (164, 494804), (328, 247402), (656, 123701)]