19705780

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{3557}}^1$

素因数の和:3843

約数の個数: 24

約数和(自身を含む): 41543208

約数和(自身を除く): 21837428

約数列:

[1, 2, 4, 5, 10, 20, 277, 554, 1108, 1385, 2770, 3557, 5540, 7114, 14228, 17785, 35570, 71140, 985289, 1970578, 3941156, 4926445, 9852890, 19705780]

約数ペア:

[(1, 19705780), (2, 9852890), (4, 4926445), (5, 3941156), (10, 1970578), (20, 985289), (277, 71140), (554, 35570), (1108, 17785), (1385, 14228), (2770, 7114), (3557, 5540)]