20675487

素因数分解:

$3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{6271}}^1$

素因数の和:6438

約数の個数: 16

約数和(自身を含む): 31711232

約数和(自身を除く): 11035745

約数列:

[1, 3, 7, 21, 157, 471, 1099, 3297, 6271, 18813, 43897, 131691, 984547, 2953641, 6891829, 20675487]

約数ペア:

[(1, 20675487), (3, 6891829), (7, 2953641), (21, 984547), (157, 131691), (471, 43897), (1099, 18813), (3297, 6271)]