16405347

素因数分解:

$3^1\times 7^3\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:280

約数の個数: 32

約数和(自身を含む): 25920000

約数和(自身を除く): 9514653

約数列:

[1, 3, 7, 21, 49, 107, 147, 149, 321, 343, 447, 749, 1029, 1043, 2247, 3129, 5243, 7301, 15729, 15943, 21903, 36701, 47829, 51107, 110103, 111601, 153321, 334803, 781207, 2343621, 5468449, 16405347]

約数ペア:

[(1, 16405347), (3, 5468449), (7, 2343621), (21, 781207), (49, 334803), (107, 153321), (147, 111601), (149, 110103), (321, 51107), (343, 47829), (447, 36701), (749, 21903), (1029, 15943), (1043, 15729), (2247, 7301), (3129, 5243)]