20978210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{190711}}^1$

素因数の和:190729

約数の個数: 16

約数和(自身を含む): 41193792

約数和(自身を除く): 20215582

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 190711, 381422, 953555, 1907110, 2097821, 4195642, 10489105, 20978210]

約数ペア:

[(1, 20978210), (2, 10489105), (5, 4195642), (10, 2097821), (11, 1907110), (22, 953555), (55, 381422), (110, 190711)]