21379605

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109639}}^1$

素因数の和:109660

約数の個数: 16

約数和(自身を含む): 36839040

約数和(自身を除く): 15459435

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 109639, 328917, 548195, 1425307, 1644585, 4275921, 7126535, 21379605]

約数ペア:

[(1, 21379605), (3, 7126535), (5, 4275921), (13, 1644585), (15, 1425307), (39, 548195), (65, 328917), (195, 109639)]