20151021

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{1493}}^1$

素因数の和:1916

約数の個数: 16

約数和(自身を含む): 29401920

約数和(自身を除く): 9250899

約数列:

[1, 3, 11, 33, 409, 1227, 1493, 4479, 4499, 13497, 16423, 49269, 610637, 1831911, 6717007, 20151021]

約数ペア:

[(1, 20151021), (3, 6717007), (11, 1831911), (33, 610637), (409, 49269), (1227, 16423), (1493, 13497), (4479, 4499)]