255856640

素因数分解:

$2^{12}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2$

素因数の和:104

約数の個数: 156

約数和(自身を含む): 683227692

約数和(自身を除く): 427371052

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 403, 416, 496, 512, 520, 620, 640, 806, 832, 961, 992, 1024, 1040, 1240, 1280, 1612, 1664, 1922, 1984, 2015, 2048, 2080, 2480, 2560, 3224, 3328, 3844, 3968, 4030, 4096, 4160, 4805, 4960, 5120, 6448, 6656, 7688, 7936, 8060, 8320, 9610, 9920, 10240, 12493, 12896, 13312, 15376, 15872, 16120, 16640, 19220, 19840, 20480, 24986, 25792, 26624, 30752, 31744, 32240, 33280, 38440, 39680, 49972, 51584, 53248, 61504, 62465, 63488, 64480, 66560, 76880, 79360, 99944, 103168, 123008, 124930, 126976, 128960, 133120, 153760, 158720, 199888, 206336, 246016, 249860, 257920, 266240, 307520, 317440, 399776, 412672, 492032, 499720, 515840, 615040, 634880, 799552, 825344, 984064, 999440, 1031680, 1230080, 1599104, 1650688, 1968128, 1998880, 2063360, 2460160, 3198208, 3936256, 3997760, 4126720, 4920320, 6396416, 7995520, 8253440, 9840640, 12792832, 15991040, 19681280, 25585664, 31982080, 51171328, 63964160, 127928320, 255856640]

約数ペア:

[(1, 255856640), (2, 127928320), (4, 63964160), (5, 51171328), (8, 31982080), (10, 25585664), (13, 19681280), (16, 15991040), (20, 12792832), (26, 9840640), (31, 8253440), (32, 7995520), (40, 6396416), (52, 4920320), (62, 4126720), (64, 3997760), (65, 3936256), (80, 3198208), (104, 2460160), (124, 2063360), (128, 1998880), (130, 1968128), (155, 1650688), (160, 1599104), (208, 1230080), (248, 1031680), (256, 999440), (260, 984064), (310, 825344), (320, 799552), (403, 634880), (416, 615040), (496, 515840), (512, 499720), (520, 492032), (620, 412672), (640, 399776), (806, 317440), (832, 307520), (961, 266240), (992, 257920), (1024, 249860), (1040, 246016), (1240, 206336), (1280, 199888), (1612, 158720), (1664, 153760), (1922, 133120), (1984, 128960), (2015, 126976), (2048, 124930), (2080, 123008), (2480, 103168), (2560, 99944), (3224, 79360), (3328, 76880), (3844, 66560), (3968, 64480), (4030, 63488), (4096, 62465), (4160, 61504), (4805, 53248), (4960, 51584), (5120, 49972), (6448, 39680), (6656, 38440), (7688, 33280), (7936, 32240), (8060, 31744), (8320, 30752), (9610, 26624), (9920, 25792), (10240, 24986), (12493, 20480), (12896, 19840), (13312, 19220), (15376, 16640), (15872, 16120)]