28008351

素因数分解:

$3^2\times 7^3\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 48505600

約数和(自身を除く): 20497249

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 211, 301, 343, 387, 441, 633, 903, 1029, 1477, 1899, 2107, 2709, 3087, 4431, 6321, 9073, 10339, 13293, 14749, 18963, 27219, 31017, 44247, 63511, 72373, 81657, 93051, 132741, 190533, 217119, 444577, 571599, 651357, 1333731, 3112039, 4001193, 9336117, 28008351]

約数ペア:

[(1, 28008351), (3, 9336117), (7, 4001193), (9, 3112039), (21, 1333731), (43, 651357), (49, 571599), (63, 444577), (129, 217119), (147, 190533), (211, 132741), (301, 93051), (343, 81657), (387, 72373), (441, 63511), (633, 44247), (903, 31017), (1029, 27219), (1477, 18963), (1899, 14749), (2107, 13293), (2709, 10339), (3087, 9073), (4431, 6321)]