21265959

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2609}}^1$

素因数の和:2655

約数の個数: 32

約数和(自身を含む): 35078400

約数和(自身を除く): 13812441

約数列:

[1, 3, 11, 13, 19, 33, 39, 57, 143, 209, 247, 429, 627, 741, 2609, 2717, 7827, 8151, 28699, 33917, 49571, 86097, 101751, 148713, 373087, 545281, 644423, 1119261, 1635843, 1933269, 7088653, 21265959]

約数ペア:

[(1, 21265959), (3, 7088653), (11, 1933269), (13, 1635843), (19, 1119261), (33, 644423), (39, 545281), (57, 373087), (143, 148713), (209, 101751), (247, 86097), (429, 49571), (627, 33917), (741, 28699), (2609, 8151), (2717, 7827)]