21087364

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{257}}^1\times {\mathrm{281}}^1$

素因数の和:615

約数の個数: 24

約数和(自身を含む): 37687608

約数和(自身を除く): 16600244

約数列:

[1, 2, 4, 73, 146, 257, 281, 292, 514, 562, 1028, 1124, 18761, 20513, 37522, 41026, 72217, 75044, 82052, 144434, 288868, 5271841, 10543682, 21087364]

約数ペア:

[(1, 21087364), (2, 10543682), (4, 5271841), (73, 288868), (146, 144434), (257, 82052), (281, 75044), (292, 72217), (514, 41026), (562, 37522), (1028, 20513), (1124, 18761)]