21056315

素因数分解:

$5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{1429}}^1$

素因数の和:1862

約数の個数: 16

約数和(自身を含む): 28966080

約数和(自身を除く): 7909765

約数列:

[1, 5, 7, 35, 421, 1429, 2105, 2947, 7145, 10003, 14735, 50015, 601609, 3008045, 4211263, 21056315]

約数ペア:

[(1, 21056315), (5, 4211263), (7, 3008045), (35, 601609), (421, 50015), (1429, 14735), (2105, 10003), (2947, 7145)]