18990099

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{307}}^1$

素因数の和:424

約数の個数: 32

約数和(自身を含む): 29568000

約数和(自身を除く): 10577901

約数列:

[1, 3, 9, 27, 29, 79, 87, 237, 261, 307, 711, 783, 921, 2133, 2291, 2763, 6873, 8289, 8903, 20619, 24253, 26709, 61857, 72759, 80127, 218277, 240381, 654831, 703337, 2110011, 6330033, 18990099]

約数ペア:

[(1, 18990099), (3, 6330033), (9, 2110011), (27, 703337), (29, 654831), (79, 240381), (87, 218277), (237, 80127), (261, 72759), (307, 61857), (711, 26709), (783, 24253), (921, 20619), (2133, 8903), (2291, 8289), (2763, 6873)]