19188785

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 30336768

約数和(自身を除く): 11147983

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 115, 121, 161, 197, 253, 385, 605, 805, 847, 985, 1265, 1379, 1771, 2167, 2783, 4235, 4531, 6895, 8855, 10835, 13915, 15169, 19481, 22655, 23837, 31717, 49841, 75845, 97405, 119185, 158585, 166859, 249205, 348887, 548251, 834295, 1744435, 2741255, 3837757, 19188785]

約数ペア:

[(1, 19188785), (5, 3837757), (7, 2741255), (11, 1744435), (23, 834295), (35, 548251), (55, 348887), (77, 249205), (115, 166859), (121, 158585), (161, 119185), (197, 97405), (253, 75845), (385, 49841), (605, 31717), (805, 23837), (847, 22655), (985, 19481), (1265, 15169), (1379, 13915), (1771, 10835), (2167, 8855), (2783, 6895), (4235, 4531)]