21554216

素因数分解:

$2^3\times {\mathrm{131}}^2\times {\mathrm{157}}^1$

素因数の和:425

約数の個数: 24

約数和(自身を含む): 40984410

約数和(自身を除く): 19430194

約数列:

[1, 2, 4, 8, 131, 157, 262, 314, 524, 628, 1048, 1256, 17161, 20567, 34322, 41134, 68644, 82268, 137288, 164536, 2694277, 5388554, 10777108, 21554216]

約数ペア:

[(1, 21554216), (2, 10777108), (4, 5388554), (8, 2694277), (131, 164536), (157, 137288), (262, 82268), (314, 68644), (524, 41134), (628, 34322), (1048, 20567), (1256, 17161)]