21738699

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15787}}^1$

素因数の和:15816

約数の個数: 20

約数和(自身を含む): 34386264

約数和(自身を除く): 12647565

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15787, 47361, 142083, 268379, 426249, 805137, 1278747, 2415411, 7246233, 21738699]

約数ペア:

[(1, 21738699), (3, 7246233), (9, 2415411), (17, 1278747), (27, 805137), (51, 426249), (81, 268379), (153, 142083), (459, 47361), (1377, 15787)]