20778345

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65963}}^1$

素因数の和:65981

約数の個数: 24

約数和(自身を含む): 41161536

約数和(自身を除く): 20383191

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65963, 197889, 329815, 461741, 593667, 989445, 1385223, 2308705, 2968335, 4155669, 6926115, 20778345]

約数ペア:

[(1, 20778345), (3, 6926115), (5, 4155669), (7, 2968335), (9, 2308705), (15, 1385223), (21, 989445), (35, 593667), (45, 461741), (63, 329815), (105, 197889), (315, 65963)]