28265769

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 49480704

約数和(自身を除く): 21214935

約数列:

[1, 3, 7, 9, 21, 31, 41, 63, 93, 123, 217, 279, 287, 353, 369, 651, 861, 1059, 1271, 1953, 2471, 2583, 3177, 3813, 7413, 8897, 10943, 11439, 14473, 22239, 26691, 32829, 43419, 76601, 80073, 98487, 101311, 130257, 229803, 303933, 448663, 689409, 911799, 1345989, 3140641, 4037967, 9421923, 28265769]

約数ペア:

[(1, 28265769), (3, 9421923), (7, 4037967), (9, 3140641), (21, 1345989), (31, 911799), (41, 689409), (63, 448663), (93, 303933), (123, 229803), (217, 130257), (279, 101311), (287, 98487), (353, 80073), (369, 76601), (651, 43419), (861, 32829), (1059, 26691), (1271, 22239), (1953, 14473), (2471, 11439), (2583, 10943), (3177, 8897), (3813, 7413)]