21739557

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{15451}}^1$

素因数の和:15528

約数の個数: 16

約数和(自身を含む): 33623552

約数和(自身を除く): 11883995

約数列:

[1, 3, 7, 21, 67, 201, 469, 1407, 15451, 46353, 108157, 324471, 1035217, 3105651, 7246519, 21739557]

約数ペア:

[(1, 21739557), (3, 7246519), (7, 3105651), (21, 1035217), (67, 324471), (201, 108157), (469, 46353), (1407, 15451)]