12721605

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{65239}}^1$

素因数の和:65260

約数の個数: 16

約数和(自身を含む): 21920640

約数和(自身を除く): 9199035

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 65239, 195717, 326195, 848107, 978585, 2544321, 4240535, 12721605]

約数ペア:

[(1, 12721605), (3, 4240535), (5, 2544321), (13, 978585), (15, 848107), (39, 326195), (65, 195717), (195, 65239)]