261567604

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{181141}}^1$

素因数の和:181183

約数の個数: 18

約数和(自身を含む): 483105714

約数和(自身を除く): 221538110

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 181141, 362282, 724564, 3441679, 6883358, 13766716, 65391901, 130783802, 261567604]

約数ペア:

[(1, 261567604), (2, 130783802), (4, 65391901), (19, 13766716), (38, 6883358), (76, 3441679), (361, 724564), (722, 362282), (1444, 181141)]