81696956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^2\times {\mathrm{661}}^1$

素因数の和:782

約数の個数: 36

約数和(自身を含む): 159205704

約数和(自身を除く): 77508748

約数列:

[1, 2, 4, 11, 22, 44, 53, 106, 212, 583, 661, 1166, 1322, 2332, 2644, 2809, 5618, 7271, 11236, 14542, 29084, 30899, 35033, 61798, 70066, 123596, 140132, 385363, 770726, 1541452, 1856749, 3713498, 7426996, 20424239, 40848478, 81696956]

約数ペア:

[(1, 81696956), (2, 40848478), (4, 20424239), (11, 7426996), (22, 3713498), (44, 1856749), (53, 1541452), (106, 770726), (212, 385363), (583, 140132), (661, 123596), (1166, 70066), (1322, 61798), (2332, 35033), (2644, 30899), (2809, 29084), (5618, 14542), (7271, 11236)]