20408739

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{1931}}^1$

素因数の和:2218

約数の個数: 16

約数和(自身を含む): 29428224

約数和(自身を除く): 9019485

約数列:

[1, 3, 13, 39, 271, 813, 1931, 3523, 5793, 10569, 25103, 75309, 523301, 1569903, 6802913, 20408739]

約数ペア:

[(1, 20408739), (3, 6802913), (13, 1569903), (39, 523301), (271, 75309), (813, 25103), (1931, 10569), (3523, 5793)]