20158678

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{1039}}^1$

素因数の和:1239

約数の個数: 16

約数和(自身を含む): 30888000

約数和(自身を除く): 10729322

約数列:

[1, 2, 89, 109, 178, 218, 1039, 2078, 9701, 19402, 92471, 113251, 184942, 226502, 10079339, 20158678]

約数ペア:

[(1, 20158678), (2, 10079339), (89, 226502), (109, 184942), (178, 113251), (218, 92471), (1039, 19402), (2078, 9701)]