21609265

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{227}}^1\times {\mathrm{241}}^1$

素因数の和:552

約数の個数: 16

約数和(自身を含む): 26484480

約数和(自身を除く): 4875215

約数列:

[1, 5, 79, 227, 241, 395, 1135, 1205, 17933, 19039, 54707, 89665, 95195, 273535, 4321853, 21609265]

約数ペア:

[(1, 21609265), (5, 4321853), (79, 273535), (227, 95195), (241, 89665), (395, 54707), (1135, 19039), (1205, 17933)]