18351891

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 30326400

約数和(自身を除く): 11974509

約数列:

[1, 3, 9, 17, 19, 51, 57, 59, 107, 153, 171, 177, 321, 323, 531, 963, 969, 1003, 1121, 1819, 2033, 2907, 3009, 3363, 5457, 6099, 6313, 9027, 10089, 16371, 18297, 18939, 19057, 34561, 56817, 57171, 103683, 107321, 119947, 171513, 311049, 321963, 359841, 965889, 1079523, 2039099, 6117297, 18351891]

約数ペア:

[(1, 18351891), (3, 6117297), (9, 2039099), (17, 1079523), (19, 965889), (51, 359841), (57, 321963), (59, 311049), (107, 171513), (153, 119947), (171, 107321), (177, 103683), (321, 57171), (323, 56817), (531, 34561), (963, 19057), (969, 18939), (1003, 18297), (1121, 16371), (1819, 10089), (2033, 9027), (2907, 6313), (3009, 6099), (3363, 5457)]