18428823

素因数分解:

$3^3\times 7^1\times {\mathrm{281}}^1\times {\mathrm{347}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 31403520

約数和(自身を除く): 12974697

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 281, 347, 843, 1041, 1967, 2429, 2529, 3123, 5901, 7287, 7587, 9369, 17703, 21861, 53109, 65583, 97507, 292521, 682549, 877563, 2047647, 2632689, 6142941, 18428823]

約数ペア:

[(1, 18428823), (3, 6142941), (7, 2632689), (9, 2047647), (21, 877563), (27, 682549), (63, 292521), (189, 97507), (281, 65583), (347, 53109), (843, 21861), (1041, 17703), (1967, 9369), (2429, 7587), (2529, 7287), (3123, 5901)]