20987510

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{433}}^1$

素因数の和:608

約数の個数: 32

約数和(自身を含む): 39184992

約数和(自身を除く): 18197482

約数列:

[1, 2, 5, 10, 37, 74, 131, 185, 262, 370, 433, 655, 866, 1310, 2165, 4330, 4847, 9694, 16021, 24235, 32042, 48470, 56723, 80105, 113446, 160210, 283615, 567230, 2098751, 4197502, 10493755, 20987510]

約数ペア:

[(1, 20987510), (2, 10493755), (5, 4197502), (10, 2098751), (37, 567230), (74, 283615), (131, 160210), (185, 113446), (262, 80105), (370, 56723), (433, 48470), (655, 32042), (866, 24235), (1310, 16021), (2165, 9694), (4330, 4847)]