21000691730

素因数分解:

$2^1\times 5^1\times {\mathrm{1091}}^1\times {\mathrm{1924903}}^1$

素因数の和:1926001

約数の個数: 16

約数和(自身を含む): 37835913024

約数和(自身を除く): 16835221294

約数列:

[1, 2, 5, 10, 1091, 2182, 5455, 10910, 1924903, 3849806, 9624515, 19249030, 2100069173, 4200138346, 10500345865, 21000691730]

約数ペア:

[(1, 21000691730), (2, 10500345865), (5, 4200138346), (10, 2100069173), (1091, 19249030), (2182, 9624515), (5455, 3849806), (10910, 1924903)]