21163690

素因数分解:

$2^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{5051}}^1$

素因数の和:5477

約数の個数: 16

約数和(自身を含む): 38193120

約数和(自身を除く): 17029430

約数列:

[1, 2, 5, 10, 419, 838, 2095, 4190, 5051, 10102, 25255, 50510, 2116369, 4232738, 10581845, 21163690]

約数ペア:

[(1, 21163690), (2, 10581845), (5, 4232738), (10, 2116369), (419, 50510), (838, 25255), (2095, 10102), (4190, 5051)]