18773755

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:89

約数の個数: 64

約数和(自身を含む): 31481856

約数和(自身を除く): 12708101

約数列:

[1, 5, 7, 11, 13, 31, 35, 55, 65, 77, 91, 121, 143, 155, 217, 341, 385, 403, 455, 605, 715, 847, 1001, 1085, 1331, 1573, 1705, 2015, 2387, 2821, 3751, 4235, 4433, 5005, 6655, 7865, 9317, 11011, 11935, 14105, 17303, 18755, 22165, 26257, 31031, 41261, 46585, 48763, 55055, 86515, 121121, 131285, 155155, 206305, 243815, 288827, 341341, 536393, 605605, 1444135, 1706705, 2681965, 3754751, 18773755]

約数ペア:

[(1, 18773755), (5, 3754751), (7, 2681965), (11, 1706705), (13, 1444135), (31, 605605), (35, 536393), (55, 341341), (65, 288827), (77, 243815), (91, 206305), (121, 155155), (143, 131285), (155, 121121), (217, 86515), (341, 55055), (385, 48763), (403, 46585), (455, 41261), (605, 31031), (715, 26257), (847, 22165), (1001, 18755), (1085, 17303), (1331, 14105), (1573, 11935), (1705, 11011), (2015, 9317), (2387, 7865), (2821, 6655), (3751, 5005), (4235, 4433)]