20458905

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{80231}}^1$

素因数の和:80256

約数の個数: 16

約数和(自身を含む): 34660224

約数和(自身を除く): 14201319

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 80231, 240693, 401155, 1203465, 1363927, 4091781, 6819635, 20458905]

約数ペア:

[(1, 20458905), (3, 6819635), (5, 4091781), (15, 1363927), (17, 1203465), (51, 401155), (85, 240693), (255, 80231)]