21964383

素因数分解:

$3^2\times 7^1\times {\mathrm{443}}^1\times {\mathrm{787}}^1$

素因数の和:1243

約数の個数: 24

約数和(自身を含む): 36386688

約数和(自身を除く): 14422305

約数列:

[1, 3, 7, 9, 21, 63, 443, 787, 1329, 2361, 3101, 3987, 5509, 7083, 9303, 16527, 27909, 49581, 348641, 1045923, 2440487, 3137769, 7321461, 21964383]

約数ペア:

[(1, 21964383), (3, 7321461), (7, 3137769), (9, 2440487), (21, 1045923), (63, 348641), (443, 49581), (787, 27909), (1329, 16527), (2361, 9303), (3101, 7083), (3987, 5509)]