21878219

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{773}}^1$

素因数の和:898

約数の個数: 16

約数和(自身を含む): 24966144

約数和(自身を除く): 3087925

約数列:

[1, 11, 31, 83, 341, 773, 913, 2573, 8503, 23963, 28303, 64159, 263593, 705749, 1988929, 21878219]

約数ペア:

[(1, 21878219), (11, 1988929), (31, 705749), (83, 263593), (341, 64159), (773, 28303), (913, 23963), (2573, 8503)]