18930807

素因数分解:

$3^3\times 7^2\times {\mathrm{41}}^1\times {\mathrm{349}}^1$

素因数の和:413

約数の個数: 48

約数和(自身を含む): 33516000

約数和(自身を除く): 14585193

約数列:

[1, 3, 7, 9, 21, 27, 41, 49, 63, 123, 147, 189, 287, 349, 369, 441, 861, 1047, 1107, 1323, 2009, 2443, 2583, 3141, 6027, 7329, 7749, 9423, 14309, 17101, 18081, 21987, 42927, 51303, 54243, 65961, 100163, 128781, 153909, 300489, 386343, 461727, 701141, 901467, 2103423, 2704401, 6310269, 18930807]

約数ペア:

[(1, 18930807), (3, 6310269), (7, 2704401), (9, 2103423), (21, 901467), (27, 701141), (41, 461727), (49, 386343), (63, 300489), (123, 153909), (147, 128781), (189, 100163), (287, 65961), (349, 54243), (369, 51303), (441, 42927), (861, 21987), (1047, 18081), (1107, 17101), (1323, 14309), (2009, 9423), (2443, 7749), (2583, 7329), (3141, 6027)]