21090860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150649}}^1$

素因数の和:150665

約数の個数: 24

約数和(自身を含む): 50618400

約数和(自身を除く): 29527540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150649, 301298, 602596, 753245, 1054543, 1506490, 2109086, 3012980, 4218172, 5272715, 10545430, 21090860]

約数ペア:

[(1, 21090860), (2, 10545430), (4, 5272715), (5, 4218172), (7, 3012980), (10, 2109086), (14, 1506490), (20, 1054543), (28, 753245), (35, 602596), (70, 301298), (140, 150649)]