19784193

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{431}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 31352832

約数和(自身を除く): 11568639

約数列:

[1, 3, 11, 13, 33, 39, 107, 143, 321, 429, 431, 1177, 1293, 1391, 3531, 4173, 4741, 5603, 14223, 15301, 16809, 45903, 46117, 61633, 138351, 184899, 507287, 599521, 1521861, 1798563, 6594731, 19784193]

約数ペア:

[(1, 19784193), (3, 6594731), (11, 1798563), (13, 1521861), (33, 599521), (39, 507287), (107, 184899), (143, 138351), (321, 61633), (429, 46117), (431, 45903), (1177, 16809), (1293, 15301), (1391, 14223), (3531, 5603), (4173, 4741)]