51288080

素因数分解:

$2^4\times 5^1\times {\mathrm{641101}}^1$

素因数の和:641114

約数の個数: 20

約数和(自身を含む): 119244972

約数和(自身を除く): 67956892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641101, 1282202, 2564404, 3205505, 5128808, 6411010, 10257616, 12822020, 25644040, 51288080]

約数ペア:

[(1, 51288080), (2, 25644040), (4, 12822020), (5, 10257616), (8, 6411010), (10, 5128808), (16, 3205505), (20, 2564404), (40, 1282202), (80, 641101)]