21986367

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 33374208

約数和(自身を除く): 11387841

約数列:

[1, 3, 13, 23, 39, 69, 127, 193, 299, 381, 579, 897, 1651, 2509, 2921, 4439, 4953, 7527, 8763, 13317, 24511, 37973, 57707, 73533, 113919, 173121, 318643, 563753, 955929, 1691259, 7328789, 21986367]

約数ペア:

[(1, 21986367), (3, 7328789), (13, 1691259), (23, 955929), (39, 563753), (69, 318643), (127, 173121), (193, 113919), (299, 73533), (381, 57707), (579, 37973), (897, 24511), (1651, 13317), (2509, 8763), (2921, 7527), (4439, 4953)]