21219273

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{11069}}^1$

素因数の和:11149

約数の個数: 16

約数和(自身を含む): 31881600

約数和(自身を除く): 10662327

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 11069, 33207, 99621, 298863, 785899, 2357697, 7073091, 21219273]

約数ペア:

[(1, 21219273), (3, 7073091), (9, 2357697), (27, 785899), (71, 298863), (213, 99621), (639, 33207), (1917, 11069)]