15989967

素因数分解:

$3^4\times 7^1\times {\mathrm{28201}}^1$

素因数の和:28220

約数の個数: 20

約数和(自身を含む): 27299536

約数和(自身を除く): 11309569

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 28201, 84603, 197407, 253809, 592221, 761427, 1776663, 2284281, 5329989, 15989967]

約数ペア:

[(1, 15989967), (3, 5329989), (7, 2284281), (9, 1776663), (21, 761427), (27, 592221), (63, 253809), (81, 197407), (189, 84603), (567, 28201)]