18207441

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 31584384

約数和(自身を除く): 13376943

約数列:

[1, 3, 7, 9, 21, 37, 63, 73, 107, 111, 219, 259, 321, 333, 511, 657, 749, 777, 963, 1533, 2247, 2331, 2701, 3959, 4599, 6741, 7811, 8103, 11877, 18907, 23433, 24309, 27713, 35631, 54677, 56721, 70299, 83139, 164031, 170163, 249417, 289007, 492093, 867021, 2023049, 2601063, 6069147, 18207441]

約数ペア:

[(1, 18207441), (3, 6069147), (7, 2601063), (9, 2023049), (21, 867021), (37, 492093), (63, 289007), (73, 249417), (107, 170163), (111, 164031), (219, 83139), (259, 70299), (321, 56721), (333, 54677), (511, 35631), (657, 27713), (749, 24309), (777, 23433), (963, 18907), (1533, 11877), (2247, 8103), (2331, 7811), (2701, 6741), (3959, 4599)]