2640305

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:304

約数の個数: 16

約数和(自身を含む): 3326400

約数和(自身を除く): 686095

約数列:

[1, 5, 29, 131, 139, 145, 655, 695, 3799, 4031, 18209, 18995, 20155, 91045, 528061, 2640305]

約数ペア:

[(1, 2640305), (5, 528061), (29, 91045), (131, 20155), (139, 18995), (145, 18209), (655, 4031), (695, 3799)]