20665018

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{479}}^1$

素因数の和:582

約数の個数: 32

約数和(自身を含む): 35458560

約数和(自身を除く): 14793542

約数列:

[1, 2, 11, 22, 37, 53, 74, 106, 407, 479, 583, 814, 958, 1166, 1961, 3922, 5269, 10538, 17723, 21571, 25387, 35446, 43142, 50774, 194953, 279257, 389906, 558514, 939319, 1878638, 10332509, 20665018]

約数ペア:

[(1, 20665018), (2, 10332509), (11, 1878638), (22, 939319), (37, 558514), (53, 389906), (74, 279257), (106, 194953), (407, 50774), (479, 43142), (583, 35446), (814, 25387), (958, 21571), (1166, 17723), (1961, 10538), (3922, 5269)]