43978000

素因数分解:

$2^4\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1999}}^1$

素因数の和:2033

約数の個数: 80

約数和(自身を含む): 116064000

約数和(自身を除く): 72086000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 125, 176, 200, 220, 250, 275, 400, 440, 500, 550, 880, 1000, 1100, 1375, 1999, 2000, 2200, 2750, 3998, 4400, 5500, 7996, 9995, 11000, 15992, 19990, 21989, 22000, 31984, 39980, 43978, 49975, 79960, 87956, 99950, 109945, 159920, 175912, 199900, 219890, 249875, 351824, 399800, 439780, 499750, 549725, 799600, 879560, 999500, 1099450, 1759120, 1999000, 2198900, 2748625, 3998000, 4397800, 5497250, 8795600, 10994500, 21989000, 43978000]

約数ペア:

[(1, 43978000), (2, 21989000), (4, 10994500), (5, 8795600), (8, 5497250), (10, 4397800), (11, 3998000), (16, 2748625), (20, 2198900), (22, 1999000), (25, 1759120), (40, 1099450), (44, 999500), (50, 879560), (55, 799600), (80, 549725), (88, 499750), (100, 439780), (110, 399800), (125, 351824), (176, 249875), (200, 219890), (220, 199900), (250, 175912), (275, 159920), (400, 109945), (440, 99950), (500, 87956), (550, 79960), (880, 49975), (1000, 43978), (1100, 39980), (1375, 31984), (1999, 22000), (2000, 21989), (2200, 19990), (2750, 15992), (3998, 11000), (4400, 9995), (5500, 7996)]