81304288

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{195443}}^1$

素因数の和:195466

約数の個数: 24

約数和(自身を含む): 172381608

約数和(自身を除く): 91077320

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 195443, 390886, 781772, 1563544, 2540759, 3127088, 5081518, 6254176, 10163036, 20326072, 40652144, 81304288]

約数ペア:

[(1, 81304288), (2, 40652144), (4, 20326072), (8, 10163036), (13, 6254176), (16, 5081518), (26, 3127088), (32, 2540759), (52, 1563544), (104, 781772), (208, 390886), (416, 195443)]