20168005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 28925568

約数和(自身を除く): 8757563

約数列:

[1, 5, 11, 13, 55, 65, 67, 143, 335, 421, 715, 737, 871, 2105, 3685, 4355, 4631, 5473, 9581, 23155, 27365, 28207, 47905, 60203, 141035, 301015, 310277, 366691, 1551385, 1833455, 4033601, 20168005]

約数ペア:

[(1, 20168005), (5, 4033601), (11, 1833455), (13, 1551385), (55, 366691), (65, 310277), (67, 301015), (143, 141035), (335, 60203), (421, 47905), (715, 28207), (737, 27365), (871, 23155), (2105, 9581), (3685, 5473), (4355, 4631)]