25539080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{463}}^1$

素因数の和:678

約数の個数: 64

約数和(自身を含む): 66147840

約数和(自身を除く): 40608760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 197, 280, 394, 463, 788, 926, 985, 1379, 1576, 1852, 1970, 2315, 2758, 3241, 3704, 3940, 4630, 5516, 6482, 6895, 7880, 9260, 11032, 12964, 13790, 16205, 18520, 25928, 27580, 32410, 55160, 64820, 91211, 129640, 182422, 364844, 456055, 638477, 729688, 912110, 1276954, 1824220, 2553908, 3192385, 3648440, 5107816, 6384770, 12769540, 25539080]

約数ペア:

[(1, 25539080), (2, 12769540), (4, 6384770), (5, 5107816), (7, 3648440), (8, 3192385), (10, 2553908), (14, 1824220), (20, 1276954), (28, 912110), (35, 729688), (40, 638477), (56, 456055), (70, 364844), (140, 182422), (197, 129640), (280, 91211), (394, 64820), (463, 55160), (788, 32410), (926, 27580), (985, 25928), (1379, 18520), (1576, 16205), (1852, 13790), (1970, 12964), (2315, 11032), (2758, 9260), (3241, 7880), (3704, 6895), (3940, 6482), (4630, 5516)]