28002177

素因数分解:

$3^2\times 7^3\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:267

約数の個数: 48

約数和(自身を含む): 48422400

約数和(自身を除く): 20420223

約数列:

[1, 3, 7, 9, 21, 47, 49, 63, 141, 147, 193, 329, 343, 423, 441, 579, 987, 1029, 1351, 1737, 2303, 2961, 3087, 4053, 6909, 9071, 9457, 12159, 16121, 20727, 27213, 28371, 48363, 63497, 66199, 81639, 85113, 145089, 190491, 198597, 444479, 571473, 595791, 1333437, 3111353, 4000311, 9334059, 28002177]

約数ペア:

[(1, 28002177), (3, 9334059), (7, 4000311), (9, 3111353), (21, 1333437), (47, 595791), (49, 571473), (63, 444479), (141, 198597), (147, 190491), (193, 145089), (329, 85113), (343, 81639), (423, 66199), (441, 63497), (579, 48363), (987, 28371), (1029, 27213), (1351, 20727), (1737, 16121), (2303, 12159), (2961, 9457), (3087, 9071), (4053, 6909)]