21585393

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:135

約数の個数: 64

約数和(自身を含む): 36771840

約数和(自身を除く): 15186447

約数列:

[1, 3, 9, 17, 27, 31, 37, 41, 51, 93, 111, 123, 153, 279, 333, 369, 459, 527, 629, 697, 837, 999, 1107, 1147, 1271, 1517, 1581, 1887, 2091, 3441, 3813, 4551, 4743, 5661, 6273, 10323, 11439, 13653, 14229, 16983, 18819, 19499, 21607, 25789, 30969, 34317, 40959, 47027, 58497, 64821, 77367, 141081, 175491, 194463, 232101, 423243, 526473, 583389, 696303, 799459, 1269729, 2398377, 7195131, 21585393]

約数ペア:

[(1, 21585393), (3, 7195131), (9, 2398377), (17, 1269729), (27, 799459), (31, 696303), (37, 583389), (41, 526473), (51, 423243), (93, 232101), (111, 194463), (123, 175491), (153, 141081), (279, 77367), (333, 64821), (369, 58497), (459, 47027), (527, 40959), (629, 34317), (697, 30969), (837, 25789), (999, 21607), (1107, 19499), (1147, 18819), (1271, 16983), (1517, 14229), (1581, 13653), (1887, 11439), (2091, 10323), (3441, 6273), (3813, 5661), (4551, 4743)]