21168085

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{167}}^1\times {\mathrm{251}}^1$

素因数の和:524

約数の個数: 16

約数和(自身を含む): 25909632

約数和(自身を除く): 4741547

約数列:

[1, 5, 101, 167, 251, 505, 835, 1255, 16867, 25351, 41917, 84335, 126755, 209585, 4233617, 21168085]

約数ペア:

[(1, 21168085), (5, 4233617), (101, 209585), (167, 126755), (251, 84335), (505, 41917), (835, 25351), (1255, 16867)]