21571208

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{859}}^1$

素因数の和:981

約数の個数: 32

約数和(自身を含む): 42002400

約数和(自身を除く): 20431192

約数列:

[1, 2, 4, 8, 43, 73, 86, 146, 172, 292, 344, 584, 859, 1718, 3139, 3436, 6278, 6872, 12556, 25112, 36937, 62707, 73874, 125414, 147748, 250828, 295496, 501656, 2696401, 5392802, 10785604, 21571208]

約数ペア:

[(1, 21571208), (2, 10785604), (4, 5392802), (8, 2696401), (43, 501656), (73, 295496), (86, 250828), (146, 147748), (172, 125414), (292, 73874), (344, 62707), (584, 36937), (859, 25112), (1718, 12556), (3139, 6872), (3436, 6278)]