21981039

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1\times {\mathrm{569}}^1$

素因数の和:814

約数の個数: 16

約数和(自身を含む): 29913600

約数和(自身を除く): 7932561

約数列:

[1, 3, 79, 163, 237, 489, 569, 1707, 12877, 38631, 44951, 92747, 134853, 278241, 7327013, 21981039]

約数ペア:

[(1, 21981039), (3, 7327013), (79, 278241), (163, 134853), (237, 92747), (489, 44951), (569, 38631), (1707, 12877)]