20986473

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{1997}}^1$

素因数の和:2144

約数の個数: 16

約数和(自身を含む): 29154816

約数和(自身を除く): 8168343

約数列:

[1, 3, 31, 93, 113, 339, 1997, 3503, 5991, 10509, 61907, 185721, 225661, 676983, 6995491, 20986473]

約数ペア:

[(1, 20986473), (3, 6995491), (31, 676983), (93, 225661), (113, 185721), (339, 61907), (1997, 10509), (3503, 5991)]