82720976

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{397697}}^1$

素因数の和:397718

約数の個数: 20

約数和(自身を含む): 172600932

約数和(自身を除く): 89879956

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 397697, 795394, 1590788, 3181576, 5170061, 6363152, 10340122, 20680244, 41360488, 82720976]

約数ペア:

[(1, 82720976), (2, 41360488), (4, 20680244), (8, 10340122), (13, 6363152), (16, 5170061), (26, 3181576), (52, 1590788), (104, 795394), (208, 397697)]