21241353

素因数分解:

$3^1\times 7^2\times {\mathrm{229}}^1\times {\mathrm{631}}^1$

素因数の和:877

約数の個数: 24

約数和(自身を含む): 33142080

約数和(自身を除く): 11900727

約数列:

[1, 3, 7, 21, 49, 147, 229, 631, 687, 1603, 1893, 4417, 4809, 11221, 13251, 30919, 33663, 92757, 144499, 433497, 1011493, 3034479, 7080451, 21241353]

約数ペア:

[(1, 21241353), (3, 7080451), (7, 3034479), (21, 1011493), (49, 433497), (147, 144499), (229, 92757), (631, 33663), (687, 30919), (1603, 13251), (1893, 11221), (4417, 4809)]