19668784

素因数分解:

$2^4\times {\mathrm{557}}^1\times {\mathrm{2207}}^1$

素因数の和:2772

約数の個数: 20

約数和(自身を含む): 38193984

約数和(自身を除く): 18525200

約数列:

[1, 2, 4, 8, 16, 557, 1114, 2207, 2228, 4414, 4456, 8828, 8912, 17656, 35312, 1229299, 2458598, 4917196, 9834392, 19668784]

約数ペア:

[(1, 19668784), (2, 9834392), (4, 4917196), (8, 2458598), (16, 1229299), (557, 35312), (1114, 17656), (2207, 8912), (2228, 8828), (4414, 4456)]