21018135

素因数分解:

$3^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{3163}}^1$

素因数の和:3614

約数の個数: 16

約数和(自身を含む): 33715584

約数和(自身を除く): 12697449

約数列:

[1, 3, 5, 15, 443, 1329, 2215, 3163, 6645, 9489, 15815, 47445, 1401209, 4203627, 7006045, 21018135]

約数ペア:

[(1, 21018135), (3, 7006045), (5, 4203627), (15, 1401209), (443, 47445), (1329, 15815), (2215, 9489), (3163, 6645)]