21765429

素因数分解:

$3^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1669}}^1$

素因数の和:1711

約数の個数: 40

約数和(自身を含む): 38797440

約数和(自身を除く): 17032011

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 81, 161, 189, 207, 483, 567, 621, 1449, 1669, 1863, 4347, 5007, 11683, 13041, 15021, 35049, 38387, 45063, 105147, 115161, 135189, 268709, 315441, 345483, 806127, 946323, 1036449, 2418381, 3109347, 7255143, 21765429]

約数ペア:

[(1, 21765429), (3, 7255143), (7, 3109347), (9, 2418381), (21, 1036449), (23, 946323), (27, 806127), (63, 345483), (69, 315441), (81, 268709), (161, 135189), (189, 115161), (207, 105147), (483, 45063), (567, 38387), (621, 35049), (1449, 15021), (1669, 13041), (1863, 11683), (4347, 5007)]