256917584

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^3$

素因数の和:126

約数の個数: 120

約数和(自身を含む): 652743936

約数和(自身を除く): 395826352

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 44, 49, 56, 62, 77, 88, 98, 112, 124, 154, 176, 196, 217, 248, 308, 341, 392, 434, 496, 539, 616, 682, 784, 868, 961, 1078, 1232, 1364, 1519, 1736, 1922, 2156, 2387, 2728, 3038, 3472, 3844, 4312, 4774, 5456, 6076, 6727, 7688, 8624, 9548, 10571, 12152, 13454, 15376, 16709, 19096, 21142, 24304, 26908, 29791, 33418, 38192, 42284, 47089, 53816, 59582, 66836, 73997, 84568, 94178, 107632, 119164, 133672, 147994, 169136, 188356, 208537, 238328, 267344, 295988, 327701, 376712, 417074, 476656, 517979, 591976, 655402, 753424, 834148, 1035958, 1183952, 1310804, 1459759, 1668296, 2071916, 2293907, 2621608, 2919518, 3336592, 4143832, 4587814, 5243216, 5839036, 8287664, 9175628, 11678072, 16057349, 18351256, 23356144, 32114698, 36702512, 64229396, 128458792, 256917584]

約数ペア:

[(1, 256917584), (2, 128458792), (4, 64229396), (7, 36702512), (8, 32114698), (11, 23356144), (14, 18351256), (16, 16057349), (22, 11678072), (28, 9175628), (31, 8287664), (44, 5839036), (49, 5243216), (56, 4587814), (62, 4143832), (77, 3336592), (88, 2919518), (98, 2621608), (112, 2293907), (124, 2071916), (154, 1668296), (176, 1459759), (196, 1310804), (217, 1183952), (248, 1035958), (308, 834148), (341, 753424), (392, 655402), (434, 591976), (496, 517979), (539, 476656), (616, 417074), (682, 376712), (784, 327701), (868, 295988), (961, 267344), (1078, 238328), (1232, 208537), (1364, 188356), (1519, 169136), (1736, 147994), (1922, 133672), (2156, 119164), (2387, 107632), (2728, 94178), (3038, 84568), (3472, 73997), (3844, 66836), (4312, 59582), (4774, 53816), (5456, 47089), (6076, 42284), (6727, 38192), (7688, 33418), (8624, 29791), (9548, 26908), (10571, 24304), (12152, 21142), (13454, 19096), (15376, 16709)]