209898409

素因数分解:

$7^2\times {\mathrm{787}}^1\times {\mathrm{5443}}^1$

素因数の和:6244

約数の個数: 12

約数和(自身を含む): 244522704

約数和(自身を除く): 34624295

約数列:

[1, 7, 49, 787, 5443, 5509, 38101, 38563, 266707, 4283641, 29985487, 209898409]

約数ペア:

[(1, 209898409), (7, 29985487), (49, 4283641), (787, 266707), (5443, 38563), (5509, 38101)]