20816780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1889}}^1$

素因数の和:1946

約数の個数: 48

約数和(自身を含む): 47628000

約数和(自身を除く): 26811220

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 95, 116, 145, 190, 290, 380, 551, 580, 1102, 1889, 2204, 2755, 3778, 5510, 7556, 9445, 11020, 18890, 35891, 37780, 54781, 71782, 109562, 143564, 179455, 219124, 273905, 358910, 547810, 717820, 1040839, 1095620, 2081678, 4163356, 5204195, 10408390, 20816780]

約数ペア:

[(1, 20816780), (2, 10408390), (4, 5204195), (5, 4163356), (10, 2081678), (19, 1095620), (20, 1040839), (29, 717820), (38, 547810), (58, 358910), (76, 273905), (95, 219124), (116, 179455), (145, 143564), (190, 109562), (290, 71782), (380, 54781), (551, 37780), (580, 35891), (1102, 18890), (1889, 11020), (2204, 9445), (2755, 7556), (3778, 5510)]