21828285

素因数分解:

$3^4\times 5^1\times {\mathrm{53897}}^1$

素因数の和:53914

約数の個数: 20

約数和(自身を含む): 39129948

約数和(自身を除く): 17301663

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53897, 161691, 269485, 485073, 808455, 1455219, 2425365, 4365657, 7276095, 21828285]

約数ペア:

[(1, 21828285), (3, 7276095), (5, 4365657), (9, 2425365), (15, 1455219), (27, 808455), (45, 485073), (81, 269485), (135, 161691), (405, 53897)]