20421271

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{277}}^1$

素因数の和:450

約数の個数: 16

約数和(自身を含む): 22698144

約数和(自身を除く): 2276873

約数列:

[1, 13, 53, 107, 277, 689, 1391, 3601, 5671, 14681, 29639, 73723, 190853, 385307, 1570867, 20421271]

約数ペア:

[(1, 20421271), (13, 1570867), (53, 385307), (107, 190853), (277, 73723), (689, 29639), (1391, 14681), (3601, 5671)]