21748496

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:292

約数の個数: 80

約数和(自身を含む): 53329920

約数和(自身を除く): 31581424

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 127, 139, 154, 176, 254, 278, 308, 508, 556, 616, 889, 973, 1016, 1112, 1232, 1397, 1529, 1778, 1946, 2032, 2224, 2794, 3058, 3556, 3892, 5588, 6116, 7112, 7784, 9779, 10703, 11176, 12232, 14224, 15568, 17653, 19558, 21406, 22352, 24464, 35306, 39116, 42812, 70612, 78232, 85624, 123571, 141224, 156464, 171248, 194183, 247142, 282448, 388366, 494284, 776732, 988568, 1359281, 1553464, 1977136, 2718562, 3106928, 5437124, 10874248, 21748496]

約数ペア:

[(1, 21748496), (2, 10874248), (4, 5437124), (7, 3106928), (8, 2718562), (11, 1977136), (14, 1553464), (16, 1359281), (22, 988568), (28, 776732), (44, 494284), (56, 388366), (77, 282448), (88, 247142), (112, 194183), (127, 171248), (139, 156464), (154, 141224), (176, 123571), (254, 85624), (278, 78232), (308, 70612), (508, 42812), (556, 39116), (616, 35306), (889, 24464), (973, 22352), (1016, 21406), (1112, 19558), (1232, 17653), (1397, 15568), (1529, 14224), (1778, 12232), (1946, 11176), (2032, 10703), (2224, 9779), (2794, 7784), (3058, 7112), (3556, 6116), (3892, 5588)]