81628144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{392443}}^1$

素因数の和:392464

約数の個数: 20

約数和(自身を含む): 170320696

約数和(自身を除く): 88692552

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 392443, 784886, 1569772, 3139544, 5101759, 6279088, 10203518, 20407036, 40814072, 81628144]

約数ペア:

[(1, 81628144), (2, 40814072), (4, 20407036), (8, 10203518), (13, 6279088), (16, 5101759), (26, 3139544), (52, 1569772), (104, 784886), (208, 392443)]