18819765

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{337}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 35116848

約数和(自身を除く): 16297083

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 73, 85, 153, 219, 255, 337, 365, 657, 765, 1011, 1095, 1241, 1685, 3033, 3285, 3723, 5055, 5729, 6205, 11169, 15165, 17187, 18615, 24601, 28645, 51561, 55845, 73803, 85935, 123005, 221409, 257805, 369015, 418217, 1107045, 1254651, 2091085, 3763953, 6273255, 18819765]

約数ペア:

[(1, 18819765), (3, 6273255), (5, 3763953), (9, 2091085), (15, 1254651), (17, 1107045), (45, 418217), (51, 369015), (73, 257805), (85, 221409), (153, 123005), (219, 85935), (255, 73803), (337, 55845), (365, 51561), (657, 28645), (765, 24601), (1011, 18615), (1095, 17187), (1241, 15165), (1685, 11169), (3033, 6205), (3285, 5729), (3723, 5055)]