21497624

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 41318640

約数和(自身を除く): 19821016

約数列:

[1, 2, 4, 8, 73, 131, 146, 262, 281, 292, 524, 562, 584, 1048, 1124, 2248, 9563, 19126, 20513, 36811, 38252, 41026, 73622, 76504, 82052, 147244, 164104, 294488, 2687203, 5374406, 10748812, 21497624]

約数ペア:

[(1, 21497624), (2, 10748812), (4, 5374406), (8, 2687203), (73, 294488), (131, 164104), (146, 147244), (262, 82052), (281, 76504), (292, 73622), (524, 41026), (562, 38252), (584, 36811), (1048, 20513), (1124, 19126), (2248, 9563)]