12873560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1999}}^1$

素因数の和:2040

約数の個数: 64

約数和(自身を含む): 34560000

約数和(自身を除く): 21686440

約数列:

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

約数ペア:

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