19994097

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 28892160

約数和(自身を除く): 8898063

約数列:

[1, 3, 37, 43, 59, 71, 111, 129, 177, 213, 1591, 2183, 2537, 2627, 3053, 4189, 4773, 6549, 7611, 7881, 9159, 12567, 93869, 112961, 154993, 180127, 281607, 338883, 464979, 540381, 6664699, 19994097]

約数ペア:

[(1, 19994097), (3, 6664699), (37, 540381), (43, 464979), (59, 338883), (71, 281607), (111, 180127), (129, 154993), (177, 112961), (213, 93869), (1591, 12567), (2183, 9159), (2537, 7881), (2627, 7611), (3053, 6549), (4189, 4773)]