21051145

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{3121}}^1$

素因数の和:3216

約数の個数: 16

約数和(自身を含む): 26974080

約数和(自身を除く): 5922935

約数列:

[1, 5, 19, 71, 95, 355, 1349, 3121, 6745, 15605, 59299, 221591, 296495, 1107955, 4210229, 21051145]

約数ペア:

[(1, 21051145), (5, 4210229), (19, 1107955), (71, 296495), (95, 221591), (355, 59299), (1349, 15605), (3121, 6745)]