133328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:662

約数の個数: 20

約数和(自身を含む): 278628

約数和(自身を除く): 145300

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 641, 1282, 2564, 5128, 8333, 10256, 16666, 33332, 66664, 133328]

約数ペア:

[(1, 133328), (2, 66664), (4, 33332), (8, 16666), (13, 10256), (16, 8333), (26, 5128), (52, 2564), (104, 1282), (208, 641)]