1298860

素因数分解:

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

素因数の和:753

約数の個数: 24

約数和(自身を含む): 2758896

約数和(自身を除く): 1460036

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 643, 1010, 1286, 2020, 2572, 3215, 6430, 12860, 64943, 129886, 259772, 324715, 649430, 1298860]

約数ペア:

[(1, 1298860), (2, 649430), (4, 324715), (5, 259772), (10, 129886), (20, 64943), (101, 12860), (202, 6430), (404, 3215), (505, 2572), (643, 2020), (1010, 1286)]