18279891

素因数分解:

$3^3\times 7^2\times {\mathrm{41}}^1\times {\mathrm{337}}^1$

素因数の和:401

約数の個数: 48

約数和(自身を含む): 32366880

約数和(自身を除く): 14086989

約数列:

[1, 3, 7, 9, 21, 27, 41, 49, 63, 123, 147, 189, 287, 337, 369, 441, 861, 1011, 1107, 1323, 2009, 2359, 2583, 3033, 6027, 7077, 7749, 9099, 13817, 16513, 18081, 21231, 41451, 49539, 54243, 63693, 96719, 124353, 148617, 290157, 373059, 445851, 677033, 870471, 2031099, 2611413, 6093297, 18279891]

約数ペア:

[(1, 18279891), (3, 6093297), (7, 2611413), (9, 2031099), (21, 870471), (27, 677033), (41, 445851), (49, 373059), (63, 290157), (123, 148617), (147, 124353), (189, 96719), (287, 63693), (337, 54243), (369, 49539), (441, 41451), (861, 21231), (1011, 18081), (1107, 16513), (1323, 13817), (2009, 9099), (2359, 7749), (2583, 7077), (3033, 6027)]