9989001

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 16930368

約数和(自身を除く): 6941367

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 101, 111, 243, 297, 303, 333, 407, 891, 909, 999, 1111, 1221, 2673, 2727, 2997, 3333, 3663, 3737, 8181, 8991, 9999, 10989, 11211, 24543, 29997, 32967, 33633, 41107, 89991, 98901, 100899, 123321, 269973, 302697, 369963, 908091, 1109889, 3329667, 9989001]

約数ペア:

[(1, 9989001), (3, 3329667), (9, 1109889), (11, 908091), (27, 369963), (33, 302697), (37, 269973), (81, 123321), (99, 100899), (101, 98901), (111, 89991), (243, 41107), (297, 33633), (303, 32967), (333, 29997), (407, 24543), (891, 11211), (909, 10989), (999, 9999), (1111, 8991), (1221, 8181), (2673, 3737), (2727, 3663), (2997, 3333)]