21700071

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{6679}}^1$

素因数の和:6723

約数の個数: 18

約数和(自身を含む): 33086040

約数和(自身を除く): 11385969

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 6679, 20037, 60111, 126901, 380703, 1142109, 2411119, 7233357, 21700071]

約数ペア:

[(1, 21700071), (3, 7233357), (9, 2411119), (19, 1142109), (57, 380703), (171, 126901), (361, 60111), (1083, 20037), (3249, 6679)]