20690896

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31541}}^1$

素因数の和:31590

約数の個数: 20

約数和(自身を含む): 41067684

約数和(自身を除く): 20376788

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31541, 63082, 126164, 252328, 504656, 1293181, 2586362, 5172724, 10345448, 20690896]

約数ペア:

[(1, 20690896), (2, 10345448), (4, 5172724), (8, 2586362), (16, 1293181), (41, 504656), (82, 252328), (164, 126164), (328, 63082), (656, 31541)]