21283743

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{28723}}^1$

素因数の和:28758

約数の個数: 16

約数和(自身を含む): 32170880

約数和(自身を除く): 10887137

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 28723, 86169, 373399, 545737, 1120197, 1637211, 7094581, 21283743]

約数ペア:

[(1, 21283743), (3, 7094581), (13, 1637211), (19, 1120197), (39, 545737), (57, 373399), (247, 86169), (741, 28723)]