20905373279

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{18549577}}^1$

素因数の和:18549614

約数の個数: 12

約数和(自身を含む): 25375822704

約数和(自身を除く): 4470449425

約数列:

[1, 7, 23, 49, 161, 1127, 18549577, 129847039, 426640271, 908929273, 2986481897, 20905373279]

約数ペア:

[(1, 20905373279), (7, 2986481897), (23, 908929273), (49, 426640271), (161, 129847039), (1127, 18549577)]