51819280

素因数分解:

$2^4\times 5^1\times {\mathrm{647741}}^1$

素因数の和:647754

約数の個数: 20

約数和(自身を含む): 120480012

約数和(自身を除く): 68660732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647741, 1295482, 2590964, 3238705, 5181928, 6477410, 10363856, 12954820, 25909640, 51819280]

約数ペア:

[(1, 51819280), (2, 25909640), (4, 12954820), (5, 10363856), (8, 6477410), (10, 5181928), (16, 3238705), (20, 2590964), (40, 1295482), (80, 647741)]