21263138

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{5209}}^1$

素因数の和:5381

約数の個数: 16

約数和(自身を含む): 34573560

約数和(自身を除く): 13310422

約数列:

[1, 2, 13, 26, 157, 314, 2041, 4082, 5209, 10418, 67717, 135434, 817813, 1635626, 10631569, 21263138]

約数ペア:

[(1, 21263138), (2, 10631569), (13, 1635626), (26, 817813), (157, 135434), (314, 67717), (2041, 10418), (4082, 5209)]