20650805

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2719}}^1$

素因数の和:2769

約数の個数: 24

約数和(自身を含む): 29767680

約数和(自身を除く): 9116875

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 2719, 7595, 13595, 19033, 84289, 95165, 133231, 421445, 590023, 666155, 2950115, 4130161, 20650805]

約数ペア:

[(1, 20650805), (5, 4130161), (7, 2950115), (31, 666155), (35, 590023), (49, 421445), (155, 133231), (217, 95165), (245, 84289), (1085, 19033), (1519, 13595), (2719, 7595)]