21481887

素因数分解:

$3^1\times 7^1\times {\mathrm{677}}^1\times {\mathrm{1511}}^1$

素因数の和:2198

約数の個数: 16

約数和(自身を含む): 32804352

約数和(自身を除く): 11322465

約数列:

[1, 3, 7, 21, 677, 1511, 2031, 4533, 4739, 10577, 14217, 31731, 1022947, 3068841, 7160629, 21481887]

約数ペア:

[(1, 21481887), (3, 7160629), (7, 3068841), (21, 1022947), (677, 31731), (1511, 14217), (2031, 10577), (4533, 4739)]