261256880

素因数分解:

$2^4\times 5^1\times {\mathrm{3265711}}^1$

素因数の和:3265724

約数の個数: 20

約数和(自身を含む): 607422432

約数和(自身を除く): 346165552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3265711, 6531422, 13062844, 16328555, 26125688, 32657110, 52251376, 65314220, 130628440, 261256880]

約数ペア:

[(1, 261256880), (2, 130628440), (4, 65314220), (5, 52251376), (8, 32657110), (10, 26125688), (16, 16328555), (20, 13062844), (40, 6531422), (80, 3265711)]