81304240

素因数分解:

$2^4\times 5^1\times {\mathrm{1016303}}^1$

素因数の和:1016316

約数の個数: 20

約数和(自身を含む): 189032544

約数和(自身を除く): 107728304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1016303, 2032606, 4065212, 5081515, 8130424, 10163030, 16260848, 20326060, 40652120, 81304240]

約数ペア:

[(1, 81304240), (2, 40652120), (4, 20326060), (5, 16260848), (8, 10163030), (10, 8130424), (16, 5081515), (20, 4065212), (40, 2032606), (80, 1016303)]