165481520

素因数分解:

$2^4\times 5^1\times {\mathrm{2068519}}^1$

素因数の和:2068532

約数の個数: 20

約数和(自身を含む): 384744720

約数和(自身を除く): 219263200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2068519, 4137038, 8274076, 10342595, 16548152, 20685190, 33096304, 41370380, 82740760, 165481520]

約数ペア:

[(1, 165481520), (2, 82740760), (4, 41370380), (5, 33096304), (8, 20685190), (10, 16548152), (16, 10342595), (20, 8274076), (40, 4137038), (80, 2068519)]