19820085

素因数分解:

$3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1999}}^1$

素因数の和:2668

約数の個数: 16

約数和(自身を含む): 31776000

約数和(自身を除く): 11955915

約数列:

[1, 3, 5, 15, 661, 1983, 1999, 3305, 5997, 9915, 9995, 29985, 1321339, 3964017, 6606695, 19820085]

約数ペア:

[(1, 19820085), (3, 6606695), (5, 3964017), (15, 1321339), (661, 29985), (1983, 9995), (1999, 9915), (3305, 5997)]