21866319

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:655

約数の個数: 24

約数和(自身を含む): 32916000

約数和(自身を除く): 11049681

約数列:

[1, 3, 9, 29, 87, 199, 261, 421, 597, 1263, 1791, 3789, 5771, 12209, 17313, 36627, 51939, 83779, 109881, 251337, 754011, 2429591, 7288773, 21866319]

約数ペア:

[(1, 21866319), (3, 7288773), (9, 2429591), (29, 754011), (87, 251337), (199, 109881), (261, 83779), (421, 51939), (597, 36627), (1263, 17313), (1791, 12209), (3789, 5771)]