1980321

素因数分解:

$3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{521}}^1$

素因数の和:712

約数の個数: 16

約数和(自身を含む): 3040128

約数和(自身を除く): 1059807

約数列:

[1, 3, 7, 21, 181, 521, 543, 1267, 1563, 3647, 3801, 10941, 94301, 282903, 660107, 1980321]

約数ペア:

[(1, 1980321), (3, 660107), (7, 282903), (21, 94301), (181, 10941), (521, 3801), (543, 3647), (1267, 1563)]