81306440

素因数分解:

$2^3\times 5^1\times {\mathrm{2032661}}^1$

素因数の和:2032672

約数の個数: 16

約数和(自身を含む): 182939580

約数和(自身を除く): 101633140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2032661, 4065322, 8130644, 10163305, 16261288, 20326610, 40653220, 81306440]

約数ペア:

[(1, 81306440), (2, 40653220), (4, 20326610), (5, 16261288), (8, 10163305), (10, 8130644), (20, 4065322), (40, 2032661)]