21000906

素因数分解:

$2^1\times 3^2\times {\mathrm{431}}^1\times {\mathrm{2707}}^1$

素因数の和:3146

約数の個数: 24

約数和(自身を含む): 45624384

約数和(自身を除く): 24623478

約数列:

[1, 2, 3, 6, 9, 18, 431, 862, 1293, 2586, 2707, 3879, 5414, 7758, 8121, 16242, 24363, 48726, 1166717, 2333434, 3500151, 7000302, 10500453, 21000906]

約数ペア:

[(1, 21000906), (2, 10500453), (3, 7000302), (6, 3500151), (9, 2333434), (18, 1166717), (431, 48726), (862, 24363), (1293, 16242), (2586, 8121), (2707, 7758), (3879, 5414)]