81990788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{35159}}^1$

素因数の和:35227

約数の個数: 24

約数和(自身を含む): 159485760

約数和(自身を除く): 77494972

約数列:

[1, 2, 4, 11, 22, 44, 53, 106, 212, 583, 1166, 2332, 35159, 70318, 140636, 386749, 773498, 1546996, 1863427, 3726854, 7453708, 20497697, 40995394, 81990788]

約数ペア:

[(1, 81990788), (2, 40995394), (4, 20497697), (11, 7453708), (22, 3726854), (44, 1863427), (53, 1546996), (106, 773498), (212, 386749), (583, 140636), (1166, 70318), (2332, 35159)]