16711640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2040

約数の個数: 64

約数和(自身を含む): 43200000

約数和(自身を除く): 26488360

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 1999, 2090, 3998, 4180, 7996, 8360, 9995, 15992, 19990, 21989, 37981, 39980, 43978, 75962, 79960, 87956, 109945, 151924, 175912, 189905, 219890, 303848, 379810, 417791, 439780, 759620, 835582, 879560, 1519240, 1671164, 2088955, 3342328, 4177910, 8355820, 16711640]

約数ペア:

[(1, 16711640), (2, 8355820), (4, 4177910), (5, 3342328), (8, 2088955), (10, 1671164), (11, 1519240), (19, 879560), (20, 835582), (22, 759620), (38, 439780), (40, 417791), (44, 379810), (55, 303848), (76, 219890), (88, 189905), (95, 175912), (110, 151924), (152, 109945), (190, 87956), (209, 79960), (220, 75962), (380, 43978), (418, 39980), (440, 37981), (760, 21989), (836, 19990), (1045, 15992), (1672, 9995), (1999, 8360), (2090, 7996), (3998, 4180)]