21863128

素因数分解:

$2^3\times 7^1\times {\mathrm{390413}}^1$

素因数の和:390426

約数の個数: 16

約数和(自身を含む): 46849680

約数和(自身を除く): 24986552

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 390413, 780826, 1561652, 2732891, 3123304, 5465782, 10931564, 21863128]

約数ペア:

[(1, 21863128), (2, 10931564), (4, 5465782), (7, 3123304), (8, 2732891), (14, 1561652), (28, 780826), (56, 390413)]