21987201

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1\times {\mathrm{821}}^1$

素因数の和:1016

約数の個数: 16

約数和(自身を含む): 29986560

約数和(自身を除く): 7999359

約数列:

[1, 3, 79, 113, 237, 339, 821, 2463, 8927, 26781, 64859, 92773, 194577, 278319, 7329067, 21987201]

約数ペア:

[(1, 21987201), (3, 7329067), (79, 278319), (113, 194577), (237, 92773), (339, 64859), (821, 26781), (2463, 8927)]