21897580

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{5189}}^1$

素因数の和:5409

約数の個数: 24

約数和(自身を含む): 46211760

約数和(自身を除く): 24314180

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 5189, 10378, 20756, 25945, 51890, 103780, 1094879, 2189758, 4379516, 5474395, 10948790, 21897580]

約数ペア:

[(1, 21897580), (2, 10948790), (4, 5474395), (5, 4379516), (10, 2189758), (20, 1094879), (211, 103780), (422, 51890), (844, 25945), (1055, 20756), (2110, 10378), (4220, 5189)]