20011782

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 47568384

約数和(自身を除く): 27556602

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 61, 73, 107, 122, 146, 183, 214, 219, 321, 366, 427, 438, 511, 642, 749, 854, 1022, 1281, 1498, 1533, 2247, 2562, 3066, 4453, 4494, 6527, 7811, 8906, 13054, 13359, 15622, 19581, 23433, 26718, 31171, 39162, 45689, 46866, 54677, 62342, 91378, 93513, 109354, 137067, 164031, 187026, 274134, 328062, 476471, 952942, 1429413, 2858826, 3335297, 6670594, 10005891, 20011782]

約数ペア:

[(1, 20011782), (2, 10005891), (3, 6670594), (6, 3335297), (7, 2858826), (14, 1429413), (21, 952942), (42, 476471), (61, 328062), (73, 274134), (107, 187026), (122, 164031), (146, 137067), (183, 109354), (214, 93513), (219, 91378), (321, 62342), (366, 54677), (427, 46866), (438, 45689), (511, 39162), (642, 31171), (749, 26718), (854, 23433), (1022, 19581), (1281, 15622), (1498, 13359), (1533, 13054), (2247, 8906), (2562, 7811), (3066, 6527), (4453, 4494)]