21649959

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1993}}^1$

素因数の和:2087

約数の個数: 24

約数和(自身を含む): 33594912

約数和(自身を除く): 11944953

約数列:

[1, 3, 9, 17, 51, 71, 153, 213, 639, 1207, 1993, 3621, 5979, 10863, 17937, 33881, 101643, 141503, 304929, 424509, 1273527, 2405551, 7216653, 21649959]

約数ペア:

[(1, 21649959), (3, 7216653), (9, 2405551), (17, 1273527), (51, 424509), (71, 304929), (153, 141503), (213, 101643), (639, 33881), (1207, 17937), (1993, 10863), (3621, 5979)]