81144028

素因数分解:

$2^2\times 7^1\times {\mathrm{643}}^1\times {\mathrm{4507}}^1$

素因数の和:5161

約数の個数: 24

約数和(自身を含む): 162576512

約数和(自身を除く): 81432484

約数列:

[1, 2, 4, 7, 14, 28, 643, 1286, 2572, 4501, 4507, 9002, 9014, 18004, 18028, 31549, 63098, 126196, 2898001, 5796002, 11592004, 20286007, 40572014, 81144028]

約数ペア:

[(1, 81144028), (2, 40572014), (4, 20286007), (7, 11592004), (14, 5796002), (28, 2898001), (643, 126196), (1286, 63098), (2572, 31549), (4501, 18028), (4507, 18004), (9002, 9014)]