21254169

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 30684544

約数和(自身を除く): 9430375

約数列:

[1, 3, 37, 43, 61, 73, 111, 129, 183, 219, 1591, 2257, 2623, 2701, 3139, 4453, 4773, 6771, 7869, 8103, 9417, 13359, 97051, 116143, 164761, 191479, 291153, 348429, 494283, 574437, 7084723, 21254169]

約数ペア:

[(1, 21254169), (3, 7084723), (37, 574437), (43, 494283), (61, 348429), (73, 291153), (111, 191479), (129, 164761), (183, 116143), (219, 97051), (1591, 13359), (2257, 9417), (2623, 8103), (2701, 7869), (3139, 6771), (4453, 4773)]