21462147

素因数分解:

$3^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1187}}^1$

素因数の和:1248

約数の個数: 36

約数和(自身を含む): 36972936

約数和(自身を除く): 15510789

約数列:

[1, 3, 7, 9, 21, 41, 49, 63, 123, 147, 287, 369, 441, 861, 1187, 2009, 2583, 3561, 6027, 8309, 10683, 18081, 24927, 48667, 58163, 74781, 146001, 174489, 340669, 438003, 523467, 1022007, 2384683, 3066021, 7154049, 21462147]

約数ペア:

[(1, 21462147), (3, 7154049), (7, 3066021), (9, 2384683), (21, 1022007), (41, 523467), (49, 438003), (63, 340669), (123, 174489), (147, 146001), (287, 74781), (369, 58163), (441, 48667), (861, 24927), (1187, 18081), (2009, 10683), (2583, 8309), (3561, 6027)]