405008

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{1489}}^1$

素因数の和:1514

約数の個数: 20

約数和(自身を含む): 831420

約数和(自身を除く): 426412

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 1489, 2978, 5956, 11912, 23824, 25313, 50626, 101252, 202504, 405008]

約数ペア:

[(1, 405008), (2, 202504), (4, 101252), (8, 50626), (16, 25313), (17, 23824), (34, 11912), (68, 5956), (136, 2978), (272, 1489)]