21696579

素因数分解:

$3^4\times {\mathrm{277}}^1\times {\mathrm{967}}^1$

素因数の和:1256

約数の個数: 20

約数和(自身を含む): 32561584

約数和(自身を除く): 10865005

約数列:

[1, 3, 9, 27, 81, 277, 831, 967, 2493, 2901, 7479, 8703, 22437, 26109, 78327, 267859, 803577, 2410731, 7232193, 21696579]

約数ペア:

[(1, 21696579), (3, 7232193), (9, 2410731), (27, 803577), (81, 267859), (277, 78327), (831, 26109), (967, 22437), (2493, 8703), (2901, 7479)]