211048821

素因数分解:

$3^4\times {\mathrm{263}}^1\times {\mathrm{9907}}^1$

素因数の和:10182

約数の個数: 20

約数和(自身を含む): 316501152

約数和(自身を除く): 105452331

約数列:

[1, 3, 9, 27, 81, 263, 789, 2367, 7101, 9907, 21303, 29721, 89163, 267489, 802467, 2605541, 7816623, 23449869, 70349607, 211048821]

約数ペア:

[(1, 211048821), (3, 70349607), (9, 23449869), (27, 7816623), (81, 2605541), (263, 802467), (789, 267489), (2367, 89163), (7101, 29721), (9907, 21303)]