81565744

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{392143}}^1$

素因数の和:392164

約数の個数: 20

約数和(自身を含む): 170190496

約数和(自身を除く): 88624752

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 392143, 784286, 1568572, 3137144, 5097859, 6274288, 10195718, 20391436, 40782872, 81565744]

約数ペア:

[(1, 81565744), (2, 40782872), (4, 20391436), (8, 10195718), (13, 6274288), (16, 5097859), (26, 3137144), (52, 1568572), (104, 784286), (208, 392143)]