19759984

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72647}}^1$

素因数の和:72672

約数の個数: 20

約数和(自身を含む): 40537584

約数和(自身を除く): 20777600

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72647, 145294, 290588, 581176, 1162352, 1234999, 2469998, 4939996, 9879992, 19759984]

約数ペア:

[(1, 19759984), (2, 9879992), (4, 4939996), (8, 2469998), (16, 1234999), (17, 1162352), (34, 581176), (68, 290588), (136, 145294), (272, 72647)]