21998853

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 32572800

約数和(自身を除く): 10573947

約数列:

[1, 3, 9, 71, 173, 199, 213, 519, 597, 639, 1557, 1791, 12283, 14129, 34427, 36849, 42387, 103281, 110547, 127161, 309843, 2444317, 7332951, 21998853]

約数ペア:

[(1, 21998853), (3, 7332951), (9, 2444317), (71, 309843), (173, 127161), (199, 110547), (213, 103281), (519, 42387), (597, 36849), (639, 34427), (1557, 14129), (1791, 12283)]