21908286

素因数分解:

$2^1\times 3^3\times {\mathrm{405709}}^1$

素因数の和:405720

約数の個数: 16

約数和(自身を含む): 48685200

約数和(自身を除く): 26776914

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 405709, 811418, 1217127, 2434254, 3651381, 7302762, 10954143, 21908286]

約数ペア:

[(1, 21908286), (2, 10954143), (3, 7302762), (6, 3651381), (9, 2434254), (18, 1217127), (27, 811418), (54, 405709)]