21568659

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{13001}}^1$

素因数の和:13090

約数の個数: 16

約数和(自身を含む): 33285120

約数和(自身を除く): 11716461

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 13001, 39003, 91007, 273021, 1027079, 3081237, 7189553, 21568659]

約数ペア:

[(1, 21568659), (3, 7189553), (7, 3081237), (21, 1027079), (79, 273021), (237, 91007), (553, 39003), (1659, 13001)]