19881596

素因数分解:

$2^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{5591}}^1$

素因数の和:5729

約数の個数: 24

約数和(自身を含む): 40083456

約数和(自身を除く): 20201860

約数列:

[1, 2, 4, 7, 14, 28, 127, 254, 508, 889, 1778, 3556, 5591, 11182, 22364, 39137, 78274, 156548, 710057, 1420114, 2840228, 4970399, 9940798, 19881596]

約数ペア:

[(1, 19881596), (2, 9940798), (4, 4970399), (7, 2840228), (14, 1420114), (28, 710057), (127, 156548), (254, 78274), (508, 39137), (889, 22364), (1778, 11182), (3556, 5591)]