20145788

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1621}}^1$

素因数の和:1877

約数の個数: 24

約数和(自身を含む): 38149440

約数和(自身を除く): 18003652

約数列:

[1, 2, 4, 13, 26, 52, 239, 478, 956, 1621, 3107, 3242, 6214, 6484, 12428, 21073, 42146, 84292, 387419, 774838, 1549676, 5036447, 10072894, 20145788]

約数ペア:

[(1, 20145788), (2, 10072894), (4, 5036447), (13, 1549676), (26, 774838), (52, 387419), (239, 84292), (478, 42146), (956, 21073), (1621, 12428), (3107, 6484), (3242, 6214)]