21446740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153191}}^1$

素因数の和:153207

約数の個数: 24

約数和(自身を含む): 51472512

約数和(自身を除く): 30025772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153191, 306382, 612764, 765955, 1072337, 1531910, 2144674, 3063820, 4289348, 5361685, 10723370, 21446740]

約数ペア:

[(1, 21446740), (2, 10723370), (4, 5361685), (5, 4289348), (7, 3063820), (10, 2144674), (14, 1531910), (20, 1072337), (28, 765955), (35, 612764), (70, 306382), (140, 153191)]