66478256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{319607}}^1$

素因数の和:319628

約数の個数: 20

約数和(自身を含む): 138709872

約数和(自身を除く): 72231616

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 319607, 639214, 1278428, 2556856, 4154891, 5113712, 8309782, 16619564, 33239128, 66478256]

約数ペア:

[(1, 66478256), (2, 33239128), (4, 16619564), (8, 8309782), (13, 5113712), (16, 4154891), (26, 2556856), (52, 1278428), (104, 639214), (208, 319607)]