21018543

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{76991}}^1$

素因数の和:77014

約数の個数: 16

約数和(自身を含む): 34492416

約数和(自身を除く): 13473873

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 76991, 230973, 538937, 1000883, 1616811, 3002649, 7006181, 21018543]

約数ペア:

[(1, 21018543), (3, 7006181), (7, 3002649), (13, 1616811), (21, 1000883), (39, 538937), (91, 230973), (273, 76991)]