21739926

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{278717}}^1$

素因数の和:278735

約数の個数: 16

約数和(自身を含む): 46824624

約数和(自身を除く): 25084698

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 278717, 557434, 836151, 1672302, 3623321, 7246642, 10869963, 21739926]

約数ペア:

[(1, 21739926), (2, 10869963), (3, 7246642), (6, 3623321), (13, 1672302), (26, 836151), (39, 557434), (78, 278717)]