25747120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1999}}^1$

素因数の和:2042

約数の個数: 80

約数和(自身を含む): 71424000

約数和(自身を除く): 45676880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 1999, 2576, 3220, 3998, 6440, 7996, 9995, 12880, 13993, 15992, 19990, 27986, 31984, 39980, 45977, 55972, 69965, 79960, 91954, 111944, 139930, 159920, 183908, 223888, 229885, 279860, 321839, 367816, 459770, 559720, 643678, 735632, 919540, 1119440, 1287356, 1609195, 1839080, 2574712, 3218390, 3678160, 5149424, 6436780, 12873560, 25747120]

約数ペア:

[(1, 25747120), (2, 12873560), (4, 6436780), (5, 5149424), (7, 3678160), (8, 3218390), (10, 2574712), (14, 1839080), (16, 1609195), (20, 1287356), (23, 1119440), (28, 919540), (35, 735632), (40, 643678), (46, 559720), (56, 459770), (70, 367816), (80, 321839), (92, 279860), (112, 229885), (115, 223888), (140, 183908), (161, 159920), (184, 139930), (230, 111944), (280, 91954), (322, 79960), (368, 69965), (460, 55972), (560, 45977), (644, 39980), (805, 31984), (920, 27986), (1288, 19990), (1610, 15992), (1840, 13993), (1999, 12880), (2576, 9995), (3220, 7996), (3998, 6440)]