21477651

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{6971}}^1$

素因数の和:7066

約数の個数: 16

約数和(自身を含む): 31234560

約数和(自身を除く): 9756909

約数列:

[1, 3, 13, 39, 79, 237, 1027, 3081, 6971, 20913, 90623, 271869, 550709, 1652127, 7159217, 21477651]

約数ペア:

[(1, 21477651), (3, 7159217), (13, 1652127), (39, 550709), (79, 271869), (237, 90623), (1027, 20913), (3081, 6971)]