18017643

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{6451}}^1$

素因数の和:6487

約数の個数: 24

約数和(自身を含む): 29421120

約数和(自身を除く): 11403477

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 6451, 19353, 45157, 122569, 135471, 316099, 367707, 857983, 948297, 2573949, 6005881, 18017643]

約数ペア:

[(1, 18017643), (3, 6005881), (7, 2573949), (19, 948297), (21, 857983), (49, 367707), (57, 316099), (133, 135471), (147, 122569), (399, 45157), (931, 19353), (2793, 6451)]