21245210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1361}}^1$

素因数の和:1598

約数の個数: 32

約数和(自身を含む): 43932672

約数和(自身を除く): 22687462

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 223, 446, 1115, 1361, 1561, 2230, 2722, 3122, 6805, 7805, 9527, 13610, 15610, 19054, 47635, 95270, 303503, 607006, 1517515, 2124521, 3035030, 4249042, 10622605, 21245210]

約数ペア:

[(1, 21245210), (2, 10622605), (5, 4249042), (7, 3035030), (10, 2124521), (14, 1517515), (35, 607006), (70, 303503), (223, 95270), (446, 47635), (1115, 19054), (1361, 15610), (1561, 13610), (2230, 9527), (2722, 7805), (3122, 6805)]