21650811

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1117}}^1$

素因数の和:1211

約数の個数: 32

約数和(自身を含む): 36062208

約数和(自身を除く): 14411397

約数列:

[1, 3, 7, 13, 21, 39, 71, 91, 213, 273, 497, 923, 1117, 1491, 2769, 3351, 6461, 7819, 14521, 19383, 23457, 43563, 79307, 101647, 237921, 304941, 555149, 1030991, 1665447, 3092973, 7216937, 21650811]

約数ペア:

[(1, 21650811), (3, 7216937), (7, 3092973), (13, 1665447), (21, 1030991), (39, 555149), (71, 304941), (91, 237921), (213, 101647), (273, 79307), (497, 43563), (923, 23457), (1117, 19383), (1491, 14521), (2769, 7819), (3351, 6461)]