21209149

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{5051}}^1$

素因数の和:5100

約数の個数: 16

約数和(自身を含む): 25462080

約数和(自身を除く): 4252931

約数列:

[1, 13, 17, 19, 221, 247, 323, 4199, 5051, 65663, 85867, 95969, 1116271, 1247597, 1631473, 21209149]

約数ペア:

[(1, 21209149), (13, 1631473), (17, 1247597), (19, 1116271), (221, 95969), (247, 85867), (323, 65663), (4199, 5051)]