21240016

素因数分解:

$2^4\times 7^1\times {\mathrm{189643}}^1$

素因数の和:189658

約数の個数: 20

約数和(自身を含む): 47031712

約数和(自身を除く): 25791696

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 189643, 379286, 758572, 1327501, 1517144, 2655002, 3034288, 5310004, 10620008, 21240016]

約数ペア:

[(1, 21240016), (2, 10620008), (4, 5310004), (7, 3034288), (8, 2655002), (14, 1517144), (16, 1327501), (28, 758572), (56, 379286), (112, 189643)]