21439979

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{1021}}^1$

素因数の和:1138

約数の個数: 16

約数和(自身を含む): 24724224

約数和(自身を除く): 3284245

約数列:

[1, 11, 23, 83, 253, 913, 1021, 1909, 11231, 20999, 23483, 84743, 258313, 932173, 1949089, 21439979]

約数ペア:

[(1, 21439979), (11, 1949089), (23, 932173), (83, 258313), (253, 84743), (913, 23483), (1021, 20999), (1909, 11231)]