20009787

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4391}}^1$

素因数の和:4439

約数の個数: 24

約数和(自身を含む): 32044032

約数和(自身を除く): 12034245

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4391, 4557, 13173, 30737, 92211, 136121, 215159, 408363, 645477, 952847, 2858541, 6669929, 20009787]

約数ペア:

[(1, 20009787), (3, 6669929), (7, 2858541), (21, 952847), (31, 645477), (49, 408363), (93, 215159), (147, 136121), (217, 92211), (651, 30737), (1519, 13173), (4391, 4557)]