21235564

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12433}}^1$

素因数の和:12505

約数の個数: 24

約数和(自身を含む): 43170848

約数和(自身を除く): 21935284

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12433, 24866, 49732, 87031, 174062, 348124, 758413, 1516826, 3033652, 5308891, 10617782, 21235564]

約数ペア:

[(1, 21235564), (2, 10617782), (4, 5308891), (7, 3033652), (14, 1516826), (28, 758413), (61, 348124), (122, 174062), (244, 87031), (427, 49732), (854, 24866), (1708, 12433)]