20791615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{4049}}^1$

素因数の和:4146

約数の個数: 16

約数和(自身を含む): 27216000

約数和(自身を除く): 6424385

約数列:

[1, 5, 13, 65, 79, 395, 1027, 4049, 5135, 20245, 52637, 263185, 319871, 1599355, 4158323, 20791615]

約数ペア:

[(1, 20791615), (5, 4158323), (13, 1599355), (65, 319871), (79, 263185), (395, 52637), (1027, 20245), (4049, 5135)]