28808409

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{523}}^1$

素因数の和:637

約数の個数: 32

約数和(自身を含む): 45743104

約数和(自身を除く): 16934695

約数列:

[1, 3, 7, 21, 43, 61, 129, 183, 301, 427, 523, 903, 1281, 1569, 2623, 3661, 7869, 10983, 18361, 22489, 31903, 55083, 67467, 95709, 157423, 223321, 472269, 669963, 1371829, 4115487, 9602803, 28808409]

約数ペア:

[(1, 28808409), (3, 9602803), (7, 4115487), (21, 1371829), (43, 669963), (61, 472269), (129, 223321), (183, 157423), (301, 95709), (427, 67467), (523, 55083), (903, 31903), (1281, 22489), (1569, 18361), (2623, 10983), (3661, 7869)]