25561328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{122891}}^1$

素因数の和:122912

約数の個数: 20

約数和(自身を含む): 53335128

約数和(自身を除く): 27773800

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 122891, 245782, 491564, 983128, 1597583, 1966256, 3195166, 6390332, 12780664, 25561328]

約数ペア:

[(1, 25561328), (2, 12780664), (4, 6390332), (8, 3195166), (13, 1966256), (16, 1597583), (26, 983128), (52, 491564), (104, 245782), (208, 122891)]