20547940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{463}}^1$

素因数の和:796

約数の個数: 48

約数和(自身を含む): 49577472

約数和(自身を除く): 29029532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 317, 463, 634, 926, 1268, 1585, 1852, 2219, 2315, 3170, 3241, 4438, 4630, 6340, 6482, 8876, 9260, 11095, 12964, 16205, 22190, 32410, 44380, 64820, 146771, 293542, 587084, 733855, 1027397, 1467710, 2054794, 2935420, 4109588, 5136985, 10273970, 20547940]

約数ペア:

[(1, 20547940), (2, 10273970), (4, 5136985), (5, 4109588), (7, 2935420), (10, 2054794), (14, 1467710), (20, 1027397), (28, 733855), (35, 587084), (70, 293542), (140, 146771), (317, 64820), (463, 44380), (634, 32410), (926, 22190), (1268, 16205), (1585, 12964), (1852, 11095), (2219, 9260), (2315, 8876), (3170, 6482), (3241, 6340), (4438, 4630)]