20989044

素因数分解:

$2^2\times 3^4\times {\mathrm{64781}}^1$

素因数の和:64797

約数の個数: 30

約数和(自身を含む): 54870354

約数和(自身を除く): 33881310

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 324, 64781, 129562, 194343, 259124, 388686, 583029, 777372, 1166058, 1749087, 2332116, 3498174, 5247261, 6996348, 10494522, 20989044]

約数ペア:

[(1, 20989044), (2, 10494522), (3, 6996348), (4, 5247261), (6, 3498174), (9, 2332116), (12, 1749087), (18, 1166058), (27, 777372), (36, 583029), (54, 388686), (81, 259124), (108, 194343), (162, 129562), (324, 64781)]