80978360

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{4157}}^1$

素因数の和:4655

約数の個数: 32

約数和(自身を含む): 182619360

約数和(自身を除く): 101641000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3896, 4157, 4870, 8314, 9740, 16628, 19480, 20785, 33256, 41570, 83140, 166280, 2024459, 4048918, 8097836, 10122295, 16195672, 20244590, 40489180, 80978360]

約数ペア:

[(1, 80978360), (2, 40489180), (4, 20244590), (5, 16195672), (8, 10122295), (10, 8097836), (20, 4048918), (40, 2024459), (487, 166280), (974, 83140), (1948, 41570), (2435, 33256), (3896, 20785), (4157, 19480), (4870, 16628), (8314, 9740)]