21111441

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{1039}}^1$

素因数の和:1576

約数の個数: 16

約数和(自身を含む): 30401280

約数和(自身を除く): 9289839

約数列:

[1, 3, 13, 39, 521, 1039, 1563, 3117, 6773, 13507, 20319, 40521, 541319, 1623957, 7037147, 21111441]

約数ペア:

[(1, 21111441), (3, 7037147), (13, 1623957), (39, 541319), (521, 40521), (1039, 20319), (1563, 13507), (3117, 6773)]