19860784

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{3191}}^1$

素因数の和:3588

約数の個数: 20

約数和(自身を含む): 38591280

約数和(自身を除く): 18730496

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 3191, 6224, 6382, 12764, 25528, 51056, 1241299, 2482598, 4965196, 9930392, 19860784]

約数ペア:

[(1, 19860784), (2, 9930392), (4, 4965196), (8, 2482598), (16, 1241299), (389, 51056), (778, 25528), (1556, 12764), (3112, 6382), (3191, 6224)]