81752180

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{37501}}^1$

素因数の和:37619

約数の個数: 24

約数和(自身を含む): 173259240

約数和(自身を除く): 91507060

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 37501, 75002, 150004, 187505, 375010, 750020, 4087609, 8175218, 16350436, 20438045, 40876090, 81752180]

約数ペア:

[(1, 81752180), (2, 40876090), (4, 20438045), (5, 16350436), (10, 8175218), (20, 4087609), (109, 750020), (218, 375010), (436, 187505), (545, 150004), (1090, 75002), (2180, 37501)]