19699855

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{293}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 28957824

約数和(自身を除く): 9257969

約数列:

[1, 5, 7, 17, 35, 85, 113, 119, 293, 565, 595, 791, 1465, 1921, 2051, 3955, 4981, 9605, 10255, 13447, 24905, 33109, 34867, 67235, 165545, 174335, 231763, 562853, 1158815, 2814265, 3939971, 19699855]

約数ペア:

[(1, 19699855), (5, 3939971), (7, 2814265), (17, 1158815), (35, 562853), (85, 231763), (113, 174335), (119, 165545), (293, 67235), (565, 34867), (595, 33109), (791, 24905), (1465, 13447), (1921, 10255), (2051, 9605), (3955, 4981)]