1281248080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{461}}^1\times {\mathrm{709}}^1$

素因数の和:1197

約数の個数: 120

約数和(自身を含む): 3477668040

約数和(自身を除く): 2196419960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 461, 490, 560, 709, 784, 922, 980, 1418, 1844, 1960, 2305, 2836, 3227, 3545, 3688, 3920, 4610, 4963, 5672, 6454, 7090, 7376, 9220, 9926, 11344, 12908, 14180, 16135, 18440, 19852, 22589, 24815, 25816, 28360, 32270, 34741, 36880, 39704, 45178, 49630, 51632, 56720, 64540, 69482, 79408, 90356, 99260, 112945, 129080, 138964, 173705, 180712, 198520, 225890, 258160, 277928, 326849, 347410, 361424, 397040, 451780, 555856, 653698, 694820, 903560, 1307396, 1389640, 1634245, 1807120, 2287943, 2614792, 2779280, 3268490, 4575886, 5229584, 6536980, 9151772, 11439715, 13073960, 16015601, 18303544, 22879430, 26147920, 32031202, 36607088, 45758860, 64062404, 80078005, 91517720, 128124808, 160156010, 183035440, 256249616, 320312020, 640624040, 1281248080]

約数ペア:

[(1, 1281248080), (2, 640624040), (4, 320312020), (5, 256249616), (7, 183035440), (8, 160156010), (10, 128124808), (14, 91517720), (16, 80078005), (20, 64062404), (28, 45758860), (35, 36607088), (40, 32031202), (49, 26147920), (56, 22879430), (70, 18303544), (80, 16015601), (98, 13073960), (112, 11439715), (140, 9151772), (196, 6536980), (245, 5229584), (280, 4575886), (392, 3268490), (461, 2779280), (490, 2614792), (560, 2287943), (709, 1807120), (784, 1634245), (922, 1389640), (980, 1307396), (1418, 903560), (1844, 694820), (1960, 653698), (2305, 555856), (2836, 451780), (3227, 397040), (3545, 361424), (3688, 347410), (3920, 326849), (4610, 277928), (4963, 258160), (5672, 225890), (6454, 198520), (7090, 180712), (7376, 173705), (9220, 138964), (9926, 129080), (11344, 112945), (12908, 99260), (14180, 90356), (16135, 79408), (18440, 69482), (19852, 64540), (22589, 56720), (24815, 51632), (25816, 49630), (28360, 45178), (32270, 39704), (34741, 36880)]