20778896375

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{641}}^1\times {\mathrm{13649}}^1$

素因数の和:14324

約数の個数: 32

約数和(自身を含む): 27341496000

約数和(自身を除く): 6562599625

約数列:

[1, 5, 19, 25, 95, 125, 475, 641, 2375, 3205, 12179, 13649, 16025, 60895, 68245, 80125, 259331, 304475, 341225, 1296655, 1522375, 1706125, 6483275, 8749009, 32416375, 43745045, 166231171, 218725225, 831155855, 1093626125, 4155779275, 20778896375]

約数ペア:

[(1, 20778896375), (5, 4155779275), (19, 1093626125), (25, 831155855), (95, 218725225), (125, 166231171), (475, 43745045), (641, 32416375), (2375, 8749009), (3205, 6483275), (12179, 1706125), (13649, 1522375), (16025, 1296655), (60895, 341225), (68245, 304475), (80125, 259331)]