25289719

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 33352704

約数和(自身を除く): 8062985

約数列:

[1, 7, 13, 23, 43, 91, 161, 281, 299, 301, 559, 989, 1967, 2093, 3653, 3913, 6463, 6923, 12083, 12857, 25571, 45241, 84019, 84581, 89999, 157079, 277909, 588133, 1099553, 1945363, 3612817, 25289719]

約数ペア:

[(1, 25289719), (7, 3612817), (13, 1945363), (23, 1099553), (43, 588133), (91, 277909), (161, 157079), (281, 89999), (299, 84581), (301, 84019), (559, 45241), (989, 25571), (1967, 12857), (2093, 12083), (3653, 6923), (3913, 6463)]