18886923

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2687}}^1$

素因数の和:2775

約数の個数: 24

約数和(自身を含む): 30191616

約数和(自身を除く): 11304693

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 2687, 7029, 8061, 24183, 29557, 88671, 190777, 266013, 572331, 1716993, 2098547, 6295641, 18886923]

約数ペア:

[(1, 18886923), (3, 6295641), (9, 2098547), (11, 1716993), (33, 572331), (71, 266013), (99, 190777), (213, 88671), (639, 29557), (781, 24183), (2343, 8061), (2687, 7029)]