1288403020

素因数分解:

$2^2\times 5^1\times {\mathrm{64420151}}^1$

素因数の和:64420160

約数の個数: 12

約数和(自身を含む): 2705646384

約数和(自身を除く): 1417243364

約数列:

[1, 2, 4, 5, 10, 20, 64420151, 128840302, 257680604, 322100755, 644201510, 1288403020]

約数ペア:

[(1, 1288403020), (2, 644201510), (4, 322100755), (5, 257680604), (10, 128840302), (20, 64420151)]