21051355

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19051}}^1$

素因数の和:19086

約数の個数: 16

約数和(自身を含む): 28806624

約数和(自身を除く): 7755269

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 19051, 95255, 247663, 323867, 1238315, 1619335, 4210271, 21051355]

約数ペア:

[(1, 21051355), (5, 4210271), (13, 1619335), (17, 1238315), (65, 323867), (85, 247663), (221, 95255), (1105, 19051)]