21542521

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{21521}}^1$

素因数の和:21552

約数の個数: 16

約数和(自身を含む): 28925568

約数和(自身を除く): 7383047

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 21521, 150647, 236731, 279773, 1657117, 1958411, 3077503, 21542521]

約数ペア:

[(1, 21542521), (7, 3077503), (11, 1958411), (13, 1657117), (77, 279773), (91, 236731), (143, 150647), (1001, 21521)]