21286783

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{5519}}^1$

素因数の和:5574

約数の個数: 16

約数和(自身を含む): 26496000

約数和(自身を除く): 5209217

約数列:

[1, 7, 19, 29, 133, 203, 551, 3857, 5519, 38633, 104861, 160051, 734027, 1120357, 3040969, 21286783]

約数ペア:

[(1, 21286783), (7, 3040969), (19, 1120357), (29, 734027), (133, 160051), (203, 104861), (551, 38633), (3857, 5519)]