76681640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1999}}^1$

素因数の和:2154

約数の個数: 64

約数和(自身を含む): 198720000

約数和(自身を除く): 122038360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 137, 140, 274, 280, 548, 685, 959, 1096, 1370, 1918, 1999, 2740, 3836, 3998, 4795, 5480, 7672, 7996, 9590, 9995, 13993, 15992, 19180, 19990, 27986, 38360, 39980, 55972, 69965, 79960, 111944, 139930, 273863, 279860, 547726, 559720, 1095452, 1369315, 1917041, 2190904, 2738630, 3834082, 5477260, 7668164, 9585205, 10954520, 15336328, 19170410, 38340820, 76681640]

約数ペア:

[(1, 76681640), (2, 38340820), (4, 19170410), (5, 15336328), (7, 10954520), (8, 9585205), (10, 7668164), (14, 5477260), (20, 3834082), (28, 2738630), (35, 2190904), (40, 1917041), (56, 1369315), (70, 1095452), (137, 559720), (140, 547726), (274, 279860), (280, 273863), (548, 139930), (685, 111944), (959, 79960), (1096, 69965), (1370, 55972), (1918, 39980), (1999, 38360), (2740, 27986), (3836, 19990), (3998, 19180), (4795, 15992), (5480, 13993), (7672, 9995), (7996, 9590)]