4009105

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 5100480

約数和(自身を除く): 1091375

約数列:

[1, 5, 29, 43, 145, 215, 643, 1247, 3215, 6235, 18647, 27649, 93235, 138245, 801821, 4009105]

約数ペア:

[(1, 4009105), (5, 801821), (29, 138245), (43, 93235), (145, 27649), (215, 18647), (643, 6235), (1247, 3215)]