876009020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{401839}}^1$

素因数の和:401957

約数の個数: 24

約数和(自身を含む): 1856500800

約数和(自身を除く): 980491780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 401839, 803678, 1607356, 2009195, 4018390, 8036780, 43800451, 87600902, 175201804, 219002255, 438004510, 876009020]

約数ペア:

[(1, 876009020), (2, 438004510), (4, 219002255), (5, 175201804), (10, 87600902), (20, 43800451), (109, 8036780), (218, 4018390), (436, 2009195), (545, 1607356), (1090, 803678), (2180, 401839)]