16721390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{238877}}^1$

素因数の和:238891

約数の個数: 16

約数和(自身を含む): 34398432

約数和(自身を除く): 17677042

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 238877, 477754, 1194385, 1672139, 2388770, 3344278, 8360695, 16721390]

約数ペア:

[(1, 16721390), (2, 8360695), (5, 3344278), (7, 2388770), (10, 1672139), (14, 1194385), (35, 477754), (70, 238877)]