21966777

素因数分解:

$3^2\times 7^1\times {\mathrm{431}}^1\times {\mathrm{809}}^1$

素因数の和:1253

約数の個数: 24

約数和(自身を含む): 36391680

約数和(自身を除く): 14424903

約数列:

[1, 3, 7, 9, 21, 63, 431, 809, 1293, 2427, 3017, 3879, 5663, 7281, 9051, 16989, 27153, 50967, 348679, 1046037, 2440753, 3138111, 7322259, 21966777]

約数ペア:

[(1, 21966777), (3, 7322259), (7, 3138111), (9, 2440753), (21, 1046037), (63, 348679), (431, 50967), (809, 27153), (1293, 16989), (2427, 9051), (3017, 7281), (3879, 5663)]