19784275

素因数分解:

$5^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{863}}^1$

素因数の和:1011

約数の個数: 24

約数和(自身を含む): 28283904

約数和(自身を除く): 8499629

約数列:

[1, 5, 7, 25, 35, 131, 175, 655, 863, 917, 3275, 4315, 4585, 6041, 21575, 22925, 30205, 113053, 151025, 565265, 791371, 2826325, 3956855, 19784275]

約数ペア:

[(1, 19784275), (5, 3956855), (7, 2826325), (25, 791371), (35, 565265), (131, 151025), (175, 113053), (655, 30205), (863, 22925), (917, 21575), (3275, 6041), (4315, 4585)]