19118726

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{199}}^1\times {\mathrm{397}}^1$

素因数の和:620

約数の個数: 24

約数和(自身を含む): 31760400

約数和(自身を除く): 12641674

約数列:

[1, 2, 11, 22, 121, 199, 242, 397, 398, 794, 2189, 4367, 4378, 8734, 24079, 48037, 48158, 79003, 96074, 158006, 869033, 1738066, 9559363, 19118726]

約数ペア:

[(1, 19118726), (2, 9559363), (11, 1738066), (22, 869033), (121, 158006), (199, 96074), (242, 79003), (397, 48158), (398, 48037), (794, 24079), (2189, 8734), (4367, 4378)]