21287986235

素因数分解:

$5^1\times {\mathrm{443}}^1\times {\mathrm{881}}^1\times {\mathrm{10909}}^1$

素因数の和:12238

約数の個数: 16

約数和(自身を含む): 25634659680

約数和(自身を除く): 4346673445

約数列:

[1, 5, 443, 881, 2215, 4405, 10909, 54545, 390283, 1951415, 4832687, 9610829, 24163435, 48054145, 4257597247, 21287986235]

約数ペア:

[(1, 21287986235), (5, 4257597247), (443, 48054145), (881, 24163435), (2215, 9610829), (4405, 4832687), (10909, 1951415), (54545, 390283)]