51287120

素因数分解:

$2^4\times 5^1\times {\mathrm{641089}}^1$

素因数の和:641102

約数の個数: 20

約数和(自身を含む): 119242740

約数和(自身を除く): 67955620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641089, 1282178, 2564356, 3205445, 5128712, 6410890, 10257424, 12821780, 25643560, 51287120]

約数ペア:

[(1, 51287120), (2, 25643560), (4, 12821780), (5, 10257424), (8, 6410890), (10, 5128712), (16, 3205445), (20, 2564356), (40, 1282178), (80, 641089)]