2597720

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{643}}^1$

素因数の和:755

約数の個数: 32

約数和(自身を含む): 5911920

約数和(自身を除く): 3314200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 643, 808, 1010, 1286, 2020, 2572, 3215, 4040, 5144, 6430, 12860, 25720, 64943, 129886, 259772, 324715, 519544, 649430, 1298860, 2597720]

約数ペア:

[(1, 2597720), (2, 1298860), (4, 649430), (5, 519544), (8, 324715), (10, 259772), (20, 129886), (40, 64943), (101, 25720), (202, 12860), (404, 6430), (505, 5144), (643, 4040), (808, 3215), (1010, 2572), (1286, 2020)]