21090070

素因数分解:

$2^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{6043}}^1$

素因数の和:6399

約数の個数: 16

約数和(自身を含む): 38077200

約数和(自身を除く): 16987130

約数列:

[1, 2, 5, 10, 349, 698, 1745, 3490, 6043, 12086, 30215, 60430, 2109007, 4218014, 10545035, 21090070]

約数ペア:

[(1, 21090070), (2, 10545035), (5, 4218014), (10, 2109007), (349, 60430), (698, 30215), (1745, 12086), (3490, 6043)]