720385328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{647}}^1$

素因数の和:822

約数の個数: 80

約数和(自身を含む): 1549025856

約数和(自身を除く): 828640528

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 101, 104, 106, 202, 208, 212, 404, 424, 647, 689, 808, 848, 1294, 1313, 1378, 1616, 2588, 2626, 2756, 5176, 5252, 5353, 5512, 8411, 10352, 10504, 10706, 11024, 16822, 21008, 21412, 33644, 34291, 42824, 65347, 67288, 68582, 69589, 85648, 130694, 134576, 137164, 139178, 261388, 274328, 278356, 445783, 522776, 548656, 556712, 849511, 891566, 1045552, 1113424, 1699022, 1783132, 3398044, 3463391, 3566264, 6796088, 6926782, 7132528, 13592176, 13853564, 27707128, 45024083, 55414256, 90048166, 180096332, 360192664, 720385328]

約数ペア:

[(1, 720385328), (2, 360192664), (4, 180096332), (8, 90048166), (13, 55414256), (16, 45024083), (26, 27707128), (52, 13853564), (53, 13592176), (101, 7132528), (104, 6926782), (106, 6796088), (202, 3566264), (208, 3463391), (212, 3398044), (404, 1783132), (424, 1699022), (647, 1113424), (689, 1045552), (808, 891566), (848, 849511), (1294, 556712), (1313, 548656), (1378, 522776), (1616, 445783), (2588, 278356), (2626, 274328), (2756, 261388), (5176, 139178), (5252, 137164), (5353, 134576), (5512, 130694), (8411, 85648), (10352, 69589), (10504, 68582), (10706, 67288), (11024, 65347), (16822, 42824), (21008, 34291), (21412, 33644)]