18504405

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 33523776

約数和(自身を除く): 15019371

約数列:

[1, 3, 5, 9, 15, 43, 45, 73, 129, 131, 215, 219, 365, 387, 393, 645, 655, 657, 1095, 1179, 1935, 1965, 3139, 3285, 5633, 5895, 9417, 9563, 15695, 16899, 28165, 28251, 28689, 47085, 47815, 50697, 84495, 86067, 141255, 143445, 253485, 411209, 430335, 1233627, 2056045, 3700881, 6168135, 18504405]

約数ペア:

[(1, 18504405), (3, 6168135), (5, 3700881), (9, 2056045), (15, 1233627), (43, 430335), (45, 411209), (73, 253485), (129, 143445), (131, 141255), (215, 86067), (219, 84495), (365, 50697), (387, 47815), (393, 47085), (645, 28689), (655, 28251), (657, 28165), (1095, 16899), (1179, 15695), (1935, 9563), (1965, 9417), (3139, 5895), (3285, 5633)]