19813143

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:196

約数の個数: 64

約数和(自身を含む): 35389440

約数和(自身を除く): 15576297

約数列:

[1, 3, 7, 17, 19, 21, 23, 51, 57, 69, 119, 127, 133, 161, 323, 357, 381, 391, 399, 437, 483, 889, 969, 1173, 1311, 2159, 2261, 2413, 2667, 2737, 2921, 3059, 6477, 6783, 7239, 7429, 8211, 8763, 9177, 15113, 16891, 20447, 22287, 41021, 45339, 49657, 50673, 52003, 55499, 61341, 123063, 148971, 156009, 166497, 287147, 347599, 388493, 861441, 943483, 1042797, 1165479, 2830449, 6604381, 19813143]

約数ペア:

[(1, 19813143), (3, 6604381), (7, 2830449), (17, 1165479), (19, 1042797), (21, 943483), (23, 861441), (51, 388493), (57, 347599), (69, 287147), (119, 166497), (127, 156009), (133, 148971), (161, 123063), (323, 61341), (357, 55499), (381, 52003), (391, 50673), (399, 49657), (437, 45339), (483, 41021), (889, 22287), (969, 20447), (1173, 16891), (1311, 15113), (2159, 9177), (2261, 8763), (2413, 8211), (2667, 7429), (2737, 7239), (2921, 6783), (3059, 6477)]