21628581

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{839}}^1$

素因数の和:1516

約数の個数: 16

約数和(自身を含む): 31140480

約数和(自身を除く): 9511899

約数列:

[1, 3, 13, 39, 661, 839, 1983, 2517, 8593, 10907, 25779, 32721, 554579, 1663737, 7209527, 21628581]

約数ペア:

[(1, 21628581), (3, 7209527), (13, 1663737), (39, 554579), (661, 32721), (839, 25779), (1983, 10907), (2517, 8593)]