21332689

素因数分解:

$7^2\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:277

約数の個数: 24

約数和(自身を含む): 25937280

約数和(自身を除く): 4604591

約数列:

[1, 7, 47, 49, 59, 157, 329, 413, 1099, 2303, 2773, 2891, 7379, 7693, 9263, 19411, 51653, 64841, 135877, 361571, 435361, 453887, 3047527, 21332689]

約数ペア:

[(1, 21332689), (7, 3047527), (47, 453887), (49, 435361), (59, 361571), (157, 135877), (329, 64841), (413, 51653), (1099, 19411), (2303, 9263), (2773, 7693), (2891, 7379)]