21457071

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{229}}^1\times {\mathrm{359}}^1$

素因数の和:623

約数の個数: 24

約数和(自身を含む): 32292000

約数和(自身を除く): 10834929

約数列:

[1, 3, 9, 29, 87, 229, 261, 359, 687, 1077, 2061, 3231, 6641, 10411, 19923, 31233, 59769, 82211, 93699, 246633, 739899, 2384119, 7152357, 21457071]

約数ペア:

[(1, 21457071), (3, 7152357), (9, 2384119), (29, 739899), (87, 246633), (229, 93699), (261, 82211), (359, 59769), (687, 31233), (1077, 19923), (2061, 10411), (3231, 6641)]