64000280

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{8377}}^1$

素因数の和:8579

約数の個数: 32

約数和(自身を含む): 144771840

約数和(自身を除く): 80771560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 8377, 16754, 33508, 41885, 67016, 83770, 167540, 335080, 1600007, 3200014, 6400028, 8000035, 12800056, 16000070, 32000140, 64000280]

約数ペア:

[(1, 64000280), (2, 32000140), (4, 16000070), (5, 12800056), (8, 8000035), (10, 6400028), (20, 3200014), (40, 1600007), (191, 335080), (382, 167540), (764, 83770), (955, 67016), (1528, 41885), (1910, 33508), (3820, 16754), (7640, 8377)]