19982540

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{4363}}^1$

素因数の和:4601

約数の個数: 24

約数和(自身を含む): 42156240

約数和(自身を除く): 22173700

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4363, 4580, 8726, 17452, 21815, 43630, 87260, 999127, 1998254, 3996508, 4995635, 9991270, 19982540]

約数ペア:

[(1, 19982540), (2, 9991270), (4, 4995635), (5, 3996508), (10, 1998254), (20, 999127), (229, 87260), (458, 43630), (916, 21815), (1145, 17452), (2290, 8726), (4363, 4580)]