21082870

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{39779}}^1$

素因数の和:39839

約数の個数: 16

約数和(自身を含む): 38666160

約数和(自身を除く): 17583290

約数列:

[1, 2, 5, 10, 53, 106, 265, 530, 39779, 79558, 198895, 397790, 2108287, 4216574, 10541435, 21082870]

約数ペア:

[(1, 21082870), (2, 10541435), (5, 4216574), (10, 2108287), (53, 397790), (106, 198895), (265, 79558), (530, 39779)]