21256085

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{593}}^1$

素因数の和:772

約数の個数: 16

約数和(自身を含む): 26174016

約数和(自身を除く): 4917931

約数列:

[1, 5, 67, 107, 335, 535, 593, 2965, 7169, 35845, 39731, 63451, 198655, 317255, 4251217, 21256085]

約数ペア:

[(1, 21256085), (5, 4251217), (67, 317255), (107, 198655), (335, 63451), (535, 39731), (593, 35845), (2965, 7169)]