20668039

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 26593920

約数和(自身を除く): 5925881

約数列:

[1, 7, 17, 29, 53, 113, 119, 203, 371, 493, 791, 901, 1537, 1921, 3277, 3451, 5989, 6307, 10759, 13447, 22939, 26129, 41923, 55709, 101813, 173681, 182903, 389963, 712691, 1215767, 2952577, 20668039]

約数ペア:

[(1, 20668039), (7, 2952577), (17, 1215767), (29, 712691), (53, 389963), (113, 182903), (119, 173681), (203, 101813), (371, 55709), (493, 41923), (791, 26129), (901, 22939), (1537, 13447), (1921, 10759), (3277, 6307), (3451, 5989)]