21896605

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1\times {\mathrm{401}}^1$

素因数の和:636

約数の個数: 16

約数和(自身を含む): 26898624

約数和(自身を除く): 5002019

約数列:

[1, 5, 67, 163, 335, 401, 815, 2005, 10921, 26867, 54605, 65363, 134335, 326815, 4379321, 21896605]

約数ペア:

[(1, 21896605), (5, 4379321), (67, 326815), (163, 134335), (335, 65363), (401, 54605), (815, 26867), (2005, 10921)]