21811167

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3119}}^1$

素因数の和:3172

約数の個数: 32

約数和(自身を含む): 37939200

約数和(自身を除く): 16128033

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 3119, 6993, 9357, 21833, 28071, 65499, 84213, 115403, 196497, 346209, 589491, 807821, 1038627, 2423463, 3115881, 7270389, 21811167]

約数ペア:

[(1, 21811167), (3, 7270389), (7, 3115881), (9, 2423463), (21, 1038627), (27, 807821), (37, 589491), (63, 346209), (111, 196497), (189, 115403), (259, 84213), (333, 65499), (777, 28071), (999, 21833), (2331, 9357), (3119, 6993)]