19518884

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 43008000

約数和(自身を除く): 23489116

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 127, 154, 254, 308, 499, 508, 889, 998, 1397, 1778, 1996, 2794, 3493, 3556, 5489, 5588, 6986, 9779, 10978, 13972, 19558, 21956, 38423, 39116, 63373, 76846, 126746, 153692, 253492, 443611, 697103, 887222, 1394206, 1774444, 2788412, 4879721, 9759442, 19518884]

約数ペア:

[(1, 19518884), (2, 9759442), (4, 4879721), (7, 2788412), (11, 1774444), (14, 1394206), (22, 887222), (28, 697103), (44, 443611), (77, 253492), (127, 153692), (154, 126746), (254, 76846), (308, 63373), (499, 39116), (508, 38423), (889, 21956), (998, 19558), (1397, 13972), (1778, 10978), (1996, 9779), (2794, 6986), (3493, 5588), (3556, 5489)]