21609973

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{14771}}^1$

素因数の和:14808

約数の個数: 16

約数和(自身を含む): 28362240

約数和(自身を除く): 6752267

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 14771, 103397, 162481, 280649, 1137367, 1964543, 3087139, 21609973]

約数ペア:

[(1, 21609973), (7, 3087139), (11, 1964543), (19, 1137367), (77, 280649), (133, 162481), (209, 103397), (1463, 14771)]