31989987

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^2$

素因数の和:204

約数の個数: 36

約数和(自身を含む): 50572080

約数和(自身を除く): 18582093

約数列:

[1, 3, 9, 23, 29, 69, 73, 87, 207, 219, 261, 657, 667, 1679, 2001, 2117, 5037, 5329, 6003, 6351, 15111, 15987, 19053, 47961, 48691, 122567, 146073, 154541, 367701, 438219, 463623, 1103103, 1390869, 3554443, 10663329, 31989987]

約数ペア:

[(1, 31989987), (3, 10663329), (9, 3554443), (23, 1390869), (29, 1103103), (69, 463623), (73, 438219), (87, 367701), (207, 154541), (219, 146073), (261, 122567), (657, 48691), (667, 47961), (1679, 19053), (2001, 15987), (2117, 15111), (5037, 6351), (5329, 6003)]