21120957

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{16411}}^1$

素因数の和:16441

約数の個数: 24

約数和(自身を含む): 35843808

約数和(自身を除く): 14722851

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 429, 1287, 16411, 49233, 147699, 180521, 213343, 541563, 640029, 1624689, 1920087, 2346773, 7040319, 21120957]

約数ペア:

[(1, 21120957), (3, 7040319), (9, 2346773), (11, 1920087), (13, 1624689), (33, 640029), (39, 541563), (99, 213343), (117, 180521), (143, 147699), (429, 49233), (1287, 16411)]