21791368

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{63347}}^1$

素因数の和:63396

約数の個数: 16

約数和(自身を含む): 41809680

約数和(自身を除く): 20018312

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 63347, 126694, 253388, 506776, 2723921, 5447842, 10895684, 21791368]

約数ペア:

[(1, 21791368), (2, 10895684), (4, 5447842), (8, 2723921), (43, 506776), (86, 253388), (172, 126694), (344, 63347)]