28279905

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{997}}^1$

素因数の和:1097

約数の個数: 32

約数和(自身を含む): 47520768

約数和(自身を除く): 19240863

約数列:

[1, 3, 5, 15, 31, 61, 93, 155, 183, 305, 465, 915, 997, 1891, 2991, 4985, 5673, 9455, 14955, 28365, 30907, 60817, 92721, 154535, 182451, 304085, 463605, 912255, 1885327, 5655981, 9426635, 28279905]

約数ペア:

[(1, 28279905), (3, 9426635), (5, 5655981), (15, 1885327), (31, 912255), (61, 463605), (93, 304085), (155, 182451), (183, 154535), (305, 92721), (465, 60817), (915, 30907), (997, 28365), (1891, 14955), (2991, 9455), (4985, 5673)]