20345476

素因数分解:

$2^2\times {\mathrm{71}}^2\times {\mathrm{1009}}^1$

素因数の和:1155

約数の個数: 18

約数和(自身を含む): 36148910

約数和(自身を除く): 15803434

約数列:

[1, 2, 4, 71, 142, 284, 1009, 2018, 4036, 5041, 10082, 20164, 71639, 143278, 286556, 5086369, 10172738, 20345476]

約数ペア:

[(1, 20345476), (2, 10172738), (4, 5086369), (71, 286556), (142, 143278), (284, 71639), (1009, 20164), (2018, 10082), (4036, 5041)]