21420770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{306011}}^1$

素因数の和:306025

約数の個数: 16

約数和(自身を含む): 44065728

約数和(自身を除く): 22644958

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 306011, 612022, 1530055, 2142077, 3060110, 4284154, 10710385, 21420770]

約数ペア:

[(1, 21420770), (2, 10710385), (5, 4284154), (7, 3060110), (10, 2142077), (14, 1530055), (35, 612022), (70, 306011)]