21456279

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61129}}^1$

素因数の和:61151

約数の個数: 16

約数和(自身を含む): 34232800

約数和(自身を除く): 12776521

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61129, 183387, 550161, 794677, 1650483, 2384031, 7152093, 21456279]

約数ペア:

[(1, 21456279), (3, 7152093), (9, 2384031), (13, 1650483), (27, 794677), (39, 550161), (117, 183387), (351, 61129)]