18800181

素因数分解:

$3^6\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:113

約数の個数: 56

約数和(自身を含む): 31399704

約数和(自身を除く): 12599523

約数列:

[1, 3, 9, 17, 27, 37, 41, 51, 81, 111, 123, 153, 243, 333, 369, 459, 629, 697, 729, 999, 1107, 1377, 1517, 1887, 2091, 2997, 3321, 4131, 4551, 5661, 6273, 8991, 9963, 12393, 13653, 16983, 18819, 25789, 26973, 29889, 40959, 50949, 56457, 77367, 122877, 152847, 169371, 232101, 368631, 458541, 508113, 696303, 1105893, 2088909, 6266727, 18800181]

約数ペア:

[(1, 18800181), (3, 6266727), (9, 2088909), (17, 1105893), (27, 696303), (37, 508113), (41, 458541), (51, 368631), (81, 232101), (111, 169371), (123, 152847), (153, 122877), (243, 77367), (333, 56457), (369, 50949), (459, 40959), (629, 29889), (697, 26973), (729, 25789), (999, 18819), (1107, 16983), (1377, 13653), (1517, 12393), (1887, 9963), (2091, 8991), (2997, 6273), (3321, 5661), (4131, 4551)]