16863987

素因数分解:

$3^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1289}}^1$

素因数の和:1395

約数の個数: 24

約数和(自身を含む): 26470800

約数和(自身を除く): 9606813

約数列:

[1, 3, 7, 21, 49, 89, 147, 267, 623, 1289, 1869, 3867, 4361, 9023, 13083, 27069, 63161, 114721, 189483, 344163, 803047, 2409141, 5621329, 16863987]

約数ペア:

[(1, 16863987), (3, 5621329), (7, 2409141), (21, 803047), (49, 344163), (89, 189483), (147, 114721), (267, 63161), (623, 27069), (1289, 13083), (1869, 9023), (3867, 4361)]