18158823

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:205

約数の個数: 40

約数和(自身を含む): 28581168

約数和(自身を除く): 10422345

約数列:

[1, 3, 9, 27, 37, 73, 81, 83, 111, 219, 249, 333, 657, 747, 999, 1971, 2241, 2701, 2997, 3071, 5913, 6059, 6723, 8103, 9213, 18177, 24309, 27639, 54531, 72927, 82917, 163593, 218781, 224183, 248751, 490779, 672549, 2017647, 6052941, 18158823]

約数ペア:

[(1, 18158823), (3, 6052941), (9, 2017647), (27, 672549), (37, 490779), (73, 248751), (81, 224183), (83, 218781), (111, 163593), (219, 82917), (249, 72927), (333, 54531), (657, 27639), (747, 24309), (999, 18177), (1971, 9213), (2241, 8103), (2701, 6723), (2997, 6059), (3071, 5913)]