20562220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{761}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 49670208

約数和(自身を除く): 29107988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 193, 386, 761, 772, 965, 1351, 1522, 1930, 2702, 3044, 3805, 3860, 5327, 5404, 6755, 7610, 10654, 13510, 15220, 21308, 26635, 27020, 53270, 106540, 146873, 293746, 587492, 734365, 1028111, 1468730, 2056222, 2937460, 4112444, 5140555, 10281110, 20562220]

約数ペア:

[(1, 20562220), (2, 10281110), (4, 5140555), (5, 4112444), (7, 2937460), (10, 2056222), (14, 1468730), (20, 1028111), (28, 734365), (35, 587492), (70, 293746), (140, 146873), (193, 106540), (386, 53270), (761, 27020), (772, 26635), (965, 21308), (1351, 15220), (1522, 13510), (1930, 10654), (2702, 7610), (3044, 6755), (3805, 5404), (3860, 5327)]