20609212

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{709}}^1$

素因数の和:782

約数の個数: 36

約数和(自身を含む): 40018440

約数和(自身を除く): 19409228

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 169, 172, 338, 559, 676, 709, 1118, 1418, 2236, 2836, 7267, 9217, 14534, 18434, 29068, 30487, 36868, 60974, 119821, 121948, 239642, 396331, 479284, 792662, 1585324, 5152303, 10304606, 20609212]

約数ペア:

[(1, 20609212), (2, 10304606), (4, 5152303), (13, 1585324), (26, 792662), (43, 479284), (52, 396331), (86, 239642), (169, 121948), (172, 119821), (338, 60974), (559, 36868), (676, 30487), (709, 29068), (1118, 18434), (1418, 14534), (2236, 9217), (2836, 7267)]