19680849

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{419}}^1$

素因数の和:749

約数の個数: 24

約数和(自身を含む): 30270240

約数和(自身を除く): 10589391

約数列:

[1, 3, 9, 17, 51, 153, 307, 419, 921, 1257, 2763, 3771, 5219, 7123, 15657, 21369, 46971, 64107, 128633, 385899, 1157697, 2186761, 6560283, 19680849]

約数ペア:

[(1, 19680849), (3, 6560283), (9, 2186761), (17, 1157697), (51, 385899), (153, 128633), (307, 64107), (419, 46971), (921, 21369), (1257, 15657), (2763, 7123), (3771, 5219)]