21693789

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1181}}^1$

素因数の和:1357

約数の個数: 24

約数和(自身を含む): 33989592

約数和(自身を除く): 12295803

約数列:

[1, 3, 9, 13, 39, 117, 157, 471, 1181, 1413, 2041, 3543, 6123, 10629, 15353, 18369, 46059, 138177, 185417, 556251, 1668753, 2410421, 7231263, 21693789]

約数ペア:

[(1, 21693789), (3, 7231263), (9, 2410421), (13, 1668753), (39, 556251), (117, 185417), (157, 138177), (471, 46059), (1181, 18369), (1413, 15353), (2041, 10629), (3543, 6123)]