20803979

素因数分解:

$7^3\times {\mathrm{131}}^1\times {\mathrm{463}}^1$

素因数の和:615

約数の個数: 16

約数和(自身を含む): 24499200

約数和(自身を除く): 3695221

約数列:

[1, 7, 49, 131, 343, 463, 917, 3241, 6419, 22687, 44933, 60653, 158809, 424571, 2971997, 20803979]

約数ペア:

[(1, 20803979), (7, 2971997), (49, 424571), (131, 158809), (343, 60653), (463, 44933), (917, 22687), (3241, 6419)]