20859643

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:343

約数の個数: 24

約数和(自身を含む): 25740288

約数和(自身を除く): 4880645

約数列:

[1, 7, 23, 49, 83, 161, 223, 581, 1127, 1561, 1909, 4067, 5129, 10927, 13363, 18509, 35903, 93541, 129563, 251321, 425707, 906941, 2979949, 20859643]

約数ペア:

[(1, 20859643), (7, 2979949), (23, 906941), (49, 425707), (83, 251321), (161, 129563), (223, 93541), (581, 35903), (1127, 18509), (1561, 13363), (1909, 10927), (4067, 5129)]