19722807

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{12967}}^1$

素因数の和:12999

約数の個数: 18

約数和(自身を含む): 30850872

約数和(自身を除く): 11128065

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 12967, 38901, 116703, 168571, 505713, 1517139, 2191423, 6574269, 19722807]

約数ペア:

[(1, 19722807), (3, 6574269), (9, 2191423), (13, 1517139), (39, 505713), (117, 168571), (169, 116703), (507, 38901), (1521, 12967)]