20857504

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1667}}^1$

素因数の和:1717

約数の個数: 48

約数和(自身を含む): 45396288

約数和(自身を除く): 24538784

約数列:

[1, 2, 4, 8, 16, 17, 23, 32, 34, 46, 68, 92, 136, 184, 272, 368, 391, 544, 736, 782, 1564, 1667, 3128, 3334, 6256, 6668, 12512, 13336, 26672, 28339, 38341, 53344, 56678, 76682, 113356, 153364, 226712, 306728, 453424, 613456, 651797, 906848, 1226912, 1303594, 2607188, 5214376, 10428752, 20857504]

約数ペア:

[(1, 20857504), (2, 10428752), (4, 5214376), (8, 2607188), (16, 1303594), (17, 1226912), (23, 906848), (32, 651797), (34, 613456), (46, 453424), (68, 306728), (92, 226712), (136, 153364), (184, 113356), (272, 76682), (368, 56678), (391, 53344), (544, 38341), (736, 28339), (782, 26672), (1564, 13336), (1667, 12512), (3128, 6668), (3334, 6256)]