19720778889

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2907383}}^1$

素因数の和:2907429

約数の個数: 32

約数和(自身を含む): 33493063680

約数和(自身を除く): 13772284791

約数列:

[1, 3, 7, 17, 19, 21, 51, 57, 119, 133, 323, 357, 399, 969, 2261, 6783, 2907383, 8722149, 20351681, 49425511, 55240277, 61055043, 148276533, 165720831, 345978577, 386681939, 939084709, 1037935731, 1160045817, 2817254127, 6573592963, 19720778889]

約数ペア:

[(1, 19720778889), (3, 6573592963), (7, 2817254127), (17, 1160045817), (19, 1037935731), (21, 939084709), (51, 386681939), (57, 345978577), (119, 165720831), (133, 148276533), (323, 61055043), (357, 55240277), (399, 49425511), (969, 20351681), (2261, 8722149), (6783, 2907383)]