81147340

素因数分解:

$2^2\times 5^1\times {\mathrm{1933}}^1\times {\mathrm{2099}}^1$

素因数の和:4041

約数の個数: 24

約数和(自身を含む): 170578800

約数和(自身を除く): 89431460

約数列:

[1, 2, 4, 5, 10, 20, 1933, 2099, 3866, 4198, 7732, 8396, 9665, 10495, 19330, 20990, 38660, 41980, 4057367, 8114734, 16229468, 20286835, 40573670, 81147340]

約数ペア:

[(1, 81147340), (2, 40573670), (4, 20286835), (5, 16229468), (10, 8114734), (20, 4057367), (1933, 41980), (2099, 38660), (3866, 20990), (4198, 19330), (7732, 10495), (8396, 9665)]