21853719

素因数分解:

$3^5\times {\mathrm{139}}^1\times {\mathrm{647}}^1$

素因数の和:801

約数の個数: 24

約数和(自身を含む): 33022080

約数和(自身を除く): 11168361

約数列:

[1, 3, 9, 27, 81, 139, 243, 417, 647, 1251, 1941, 3753, 5823, 11259, 17469, 33777, 52407, 89933, 157221, 269799, 809397, 2428191, 7284573, 21853719]

約数ペア:

[(1, 21853719), (3, 7284573), (9, 2428191), (27, 809397), (81, 269799), (139, 157221), (243, 89933), (417, 52407), (647, 33777), (1251, 17469), (1941, 11259), (3753, 5823)]