85878020

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{81017}}^1$

素因数の和:81079

約数の個数: 24

約数和(自身を含む): 183748824

約数和(自身を除く): 97870804

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 81017, 162034, 324068, 405085, 810170, 1620340, 4293901, 8587802, 17175604, 21469505, 42939010, 85878020]

約数ペア:

[(1, 85878020), (2, 42939010), (4, 21469505), (5, 17175604), (10, 8587802), (20, 4293901), (53, 1620340), (106, 810170), (212, 405085), (265, 324068), (530, 162034), (1060, 81017)]