20838987

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{643}}^1$

素因数の和:939

約数の個数: 24

約数和(自身を含む): 32583824

約数和(自身を除く): 11744837

約数列:

[1, 3, 9, 13, 39, 117, 277, 643, 831, 1929, 2493, 3601, 5787, 8359, 10803, 25077, 32409, 75231, 178111, 534333, 1602999, 2315443, 6946329, 20838987]

約数ペア:

[(1, 20838987), (3, 6946329), (9, 2315443), (13, 1602999), (39, 534333), (117, 178111), (277, 75231), (643, 32409), (831, 25077), (1929, 10803), (2493, 8359), (3601, 5787)]