20884784

素因数分解:

$2^4\times {\mathrm{691}}^1\times {\mathrm{1889}}^1$

素因数の和:2588

約数の個数: 20

約数和(自身を含む): 40544280

約数和(自身を除く): 19659496

約数列:

[1, 2, 4, 8, 16, 691, 1382, 1889, 2764, 3778, 5528, 7556, 11056, 15112, 30224, 1305299, 2610598, 5221196, 10442392, 20884784]

約数ペア:

[(1, 20884784), (2, 10442392), (4, 5221196), (8, 2610598), (16, 1305299), (691, 30224), (1382, 15112), (1889, 11056), (2764, 7556), (3778, 5528)]