81996981

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{113}}^1\times {\mathrm{1999}}^1$

素因数の和:2137

約数の個数: 24

約数和(自身を含む): 121296000

約数和(自身を除く): 39299019

約数列:

[1, 3, 11, 33, 113, 121, 339, 363, 1243, 1999, 3729, 5997, 13673, 21989, 41019, 65967, 225887, 241879, 677661, 725637, 2484757, 7454271, 27332327, 81996981]

約数ペア:

[(1, 81996981), (3, 27332327), (11, 7454271), (33, 2484757), (113, 725637), (121, 677661), (339, 241879), (363, 225887), (1243, 65967), (1999, 41019), (3729, 21989), (5997, 13673)]