21827871

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{113}}^1\times {\mathrm{127}}^1$

素因数の和:272

約数の個数: 36

約数和(自身を含む): 34714368

約数和(自身を除く): 12886497

約数列:

[1, 3, 9, 13, 39, 113, 117, 127, 169, 339, 381, 507, 1017, 1143, 1469, 1521, 1651, 4407, 4953, 13221, 14351, 14859, 19097, 21463, 43053, 57291, 64389, 129159, 171873, 186563, 193167, 559689, 1679067, 2425319, 7275957, 21827871]

約数ペア:

[(1, 21827871), (3, 7275957), (9, 2425319), (13, 1679067), (39, 559689), (113, 193167), (117, 186563), (127, 171873), (169, 129159), (339, 64389), (381, 57291), (507, 43053), (1017, 21463), (1143, 19097), (1469, 14859), (1521, 14351), (1651, 13221), (4407, 4953)]