17981217

素因数分解:

$3^3\times {\mathrm{541}}^1\times {\mathrm{1231}}^1$

素因数の和:1781

約数の個数: 16

約数和(自身を含む): 26709760

約数和(自身を除く): 8728543

約数列:

[1, 3, 9, 27, 541, 1231, 1623, 3693, 4869, 11079, 14607, 33237, 665971, 1997913, 5993739, 17981217]

約数ペア:

[(1, 17981217), (3, 5993739), (9, 1997913), (27, 665971), (541, 33237), (1231, 14607), (1623, 11079), (3693, 4869)]