21639459

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1\times {\mathrm{541}}^1$

素因数の和:810

約数の個数: 16

約数和(自身を含む): 29484800

約数和(自身を除く): 7845341

約数列:

[1, 3, 67, 199, 201, 541, 597, 1623, 13333, 36247, 39999, 107659, 108741, 322977, 7213153, 21639459]

約数ペア:

[(1, 21639459), (3, 7213153), (67, 322977), (199, 108741), (201, 107659), (541, 39999), (597, 36247), (1623, 13333)]