85978000

素因数分解:

$2^4\times 5^3\times {\mathrm{42989}}^1$

素因数の和:43012

約数の個数: 40

約数和(自身を含む): 207899640

約数和(自身を除く): 121921640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 42989, 85978, 171956, 214945, 343912, 429890, 687824, 859780, 1074725, 1719560, 2149450, 3439120, 4298900, 5373625, 8597800, 10747250, 17195600, 21494500, 42989000, 85978000]

約数ペア:

[(1, 85978000), (2, 42989000), (4, 21494500), (5, 17195600), (8, 10747250), (10, 8597800), (16, 5373625), (20, 4298900), (25, 3439120), (40, 2149450), (50, 1719560), (80, 1074725), (100, 859780), (125, 687824), (200, 429890), (250, 343912), (400, 214945), (500, 171956), (1000, 85978), (2000, 42989)]