28506177

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 49840128

約数和(自身を除く): 21333951

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 103, 161, 191, 207, 309, 483, 573, 721, 927, 1337, 1449, 1719, 2163, 2369, 4011, 4393, 6489, 7107, 12033, 13179, 16583, 19673, 21321, 30751, 39537, 49749, 59019, 92253, 137711, 149247, 177057, 276759, 413133, 452479, 1239399, 1357437, 3167353, 4072311, 9502059, 28506177]

約数ペア:

[(1, 28506177), (3, 9502059), (7, 4072311), (9, 3167353), (21, 1357437), (23, 1239399), (63, 452479), (69, 413133), (103, 276759), (161, 177057), (191, 149247), (207, 137711), (309, 92253), (483, 59019), (573, 49749), (721, 39537), (927, 30751), (1337, 21321), (1449, 19673), (1719, 16583), (2163, 13179), (2369, 12033), (4011, 7107), (4393, 6489)]