21345155

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{541}}^1\times {\mathrm{607}}^1$

素因数の和:1166

約数の個数: 16

約数和(自身を含む): 27681024

約数和(自身を除く): 6335869

約数列:

[1, 5, 13, 65, 541, 607, 2705, 3035, 7033, 7891, 35165, 39455, 328387, 1641935, 4269031, 21345155]

約数ペア:

[(1, 21345155), (5, 4269031), (13, 1641935), (65, 328387), (541, 39455), (607, 35165), (2705, 7891), (3035, 7033)]