21000994551

素因数分解:

$3^3\times {\mathrm{251}}^1\times {\mathrm{3098863}}^1$

素因数の和:3099123

約数の個数: 16

約数和(自身を含む): 31236549120

約数和(自身を除く): 10235554569

約数列:

[1, 3, 9, 27, 251, 753, 2259, 6777, 3098863, 9296589, 27889767, 83669301, 777814613, 2333443839, 7000331517, 21000994551]

約数ペア:

[(1, 21000994551), (3, 7000331517), (9, 2333443839), (27, 777814613), (251, 83669301), (753, 27889767), (2259, 9296589), (6777, 3098863)]