20288565

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2411}}^1$

素因数の和:2450

約数の個数: 48

約数和(自身を含む): 40637376

約数和(自身を除く): 20348811

約数列:

[1, 3, 5, 9, 11, 15, 17, 33, 45, 51, 55, 85, 99, 153, 165, 187, 255, 495, 561, 765, 935, 1683, 2411, 2805, 7233, 8415, 12055, 21699, 26521, 36165, 40987, 79563, 108495, 122961, 132605, 204935, 238689, 368883, 397815, 450857, 614805, 1193445, 1352571, 1844415, 2254285, 4057713, 6762855, 20288565]

約数ペア:

[(1, 20288565), (3, 6762855), (5, 4057713), (9, 2254285), (11, 1844415), (15, 1352571), (17, 1193445), (33, 614805), (45, 450857), (51, 397815), (55, 368883), (85, 238689), (99, 204935), (153, 132605), (165, 122961), (187, 108495), (255, 79563), (495, 40987), (561, 36165), (765, 26521), (935, 21699), (1683, 12055), (2411, 8415), (2805, 7233)]