20005947

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{2111}}^1$

素因数の和:2142

約数の個数: 28

約数和(自身を含む): 32317824

約数和(自身を除く): 12311877

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 729, 1053, 2111, 3159, 6333, 9477, 18999, 27443, 56997, 82329, 170991, 246987, 512973, 740961, 1538919, 2222883, 6668649, 20005947]

約数ペア:

[(1, 20005947), (3, 6668649), (9, 2222883), (13, 1538919), (27, 740961), (39, 512973), (81, 246987), (117, 170991), (243, 82329), (351, 56997), (729, 27443), (1053, 18999), (2111, 9477), (3159, 6333)]