28238427

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{761}}^1$

素因数の和:824

約数の個数: 48

約数和(自身を含む): 50718720

約数和(自身を除く): 22480293

約数列:

[1, 3, 7, 9, 19, 21, 31, 57, 63, 93, 133, 171, 217, 279, 399, 589, 651, 761, 1197, 1767, 1953, 2283, 4123, 5301, 5327, 6849, 12369, 14459, 15981, 23591, 37107, 43377, 47943, 70773, 101213, 130131, 165137, 212319, 303639, 448229, 495411, 910917, 1344687, 1486233, 3137603, 4034061, 9412809, 28238427]

約数ペア:

[(1, 28238427), (3, 9412809), (7, 4034061), (9, 3137603), (19, 1486233), (21, 1344687), (31, 910917), (57, 495411), (63, 448229), (93, 303639), (133, 212319), (171, 165137), (217, 130131), (279, 101213), (399, 70773), (589, 47943), (651, 43377), (761, 37107), (1197, 23591), (1767, 15981), (1953, 14459), (2283, 12369), (4123, 6849), (5301, 5327)]