19963568

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11447}}^1$

素因数の和:11564

約数の個数: 20

約数和(自身を含む): 39037680

約数和(自身を除く): 19074112

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11447, 22894, 45788, 91576, 183152, 1247723, 2495446, 4990892, 9981784, 19963568]

約数ペア:

[(1, 19963568), (2, 9981784), (4, 4990892), (8, 2495446), (16, 1247723), (109, 183152), (218, 91576), (436, 45788), (872, 22894), (1744, 11447)]