20678756

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12107}}^1$

素因数の和:12179

約数の個数: 24

約数和(自身を含む): 42038976

約数和(自身を除く): 21360220

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12107, 24214, 48428, 84749, 169498, 338996, 738527, 1477054, 2954108, 5169689, 10339378, 20678756]

約数ペア:

[(1, 20678756), (2, 10339378), (4, 5169689), (7, 2954108), (14, 1477054), (28, 738527), (61, 338996), (122, 169498), (244, 84749), (427, 48428), (854, 24214), (1708, 12107)]