20691838

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1\times {\mathrm{757}}^1$

素因数の和:1011

約数の個数: 16

約数和(自身を含む): 31654080

約数和(自身を除く): 10962242

約数列:

[1, 2, 79, 158, 173, 346, 757, 1514, 13667, 27334, 59803, 119606, 130961, 261922, 10345919, 20691838]

約数ペア:

[(1, 20691838), (2, 10345919), (79, 261922), (158, 130961), (173, 119606), (346, 59803), (757, 27334), (1514, 13667)]