21306651

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{1103}}^1$

素因数の和:1290

約数の個数: 16

約数和(自身を含む): 29251584

約数和(自身を除く): 7944933

約数列:

[1, 3, 47, 137, 141, 411, 1103, 3309, 6439, 19317, 51841, 151111, 155523, 453333, 7102217, 21306651]

約数ペア:

[(1, 21306651), (3, 7102217), (47, 453333), (137, 155523), (141, 151111), (411, 51841), (1103, 19317), (3309, 6439)]