81356440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{184901}}^1$

素因数の和:184923

約数の個数: 32

約数和(自身を含む): 199694160

約数和(自身を除く): 118337720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 184901, 369802, 739604, 924505, 1479208, 1849010, 2033911, 3698020, 4067822, 7396040, 8135644, 10169555, 16271288, 20339110, 40678220, 81356440]

約数ペア:

[(1, 81356440), (2, 40678220), (4, 20339110), (5, 16271288), (8, 10169555), (10, 8135644), (11, 7396040), (20, 4067822), (22, 3698020), (40, 2033911), (44, 1849010), (55, 1479208), (88, 924505), (110, 739604), (220, 369802), (440, 184901)]