21403811

素因数分解:

${\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{1237}}^1$

素因数の和:1283

約数の個数: 16

約数和(自身を含む): 25374048

約数和(自身を除く): 3970237

約数列:

[1, 11, 13, 121, 143, 1237, 1331, 1573, 13607, 16081, 17303, 149677, 176891, 1646447, 1945801, 21403811]

約数ペア:

[(1, 21403811), (11, 1945801), (13, 1646447), (121, 176891), (143, 149677), (1237, 17303), (1331, 16081), (1573, 13607)]