81215740

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109751}}^1$

素因数の和:109797

約数の個数: 24

約数和(自身を含む): 175164192

約数和(自身を除く): 93948452

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 109751, 219502, 439004, 548755, 1097510, 2195020, 4060787, 8121574, 16243148, 20303935, 40607870, 81215740]

約数ペア:

[(1, 81215740), (2, 40607870), (4, 20303935), (5, 16243148), (10, 8121574), (20, 4060787), (37, 2195020), (74, 1097510), (148, 548755), (185, 439004), (370, 219502), (740, 109751)]