21036021

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{1277}}^1$

素因数の和:1333

約数の個数: 24

約数和(自身を含む): 31387680

約数和(自身を除く): 10351659

約数列:

[1, 3, 17, 19, 51, 57, 289, 323, 867, 969, 1277, 3831, 5491, 16473, 21709, 24263, 65127, 72789, 369053, 412471, 1107159, 1237413, 7012007, 21036021]

約数ペア:

[(1, 21036021), (3, 7012007), (17, 1237413), (19, 1107159), (51, 412471), (57, 369053), (289, 72789), (323, 65127), (867, 24263), (969, 21709), (1277, 16473), (3831, 5491)]