20512688

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{7963}}^1$

素因数の和:8001

約数の個数: 40

約数和(自身を含む): 47401728

約数和(自身を除く): 26889040

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 56, 92, 112, 161, 184, 322, 368, 644, 1288, 2576, 7963, 15926, 31852, 55741, 63704, 111482, 127408, 183149, 222964, 366298, 445928, 732596, 891856, 1282043, 1465192, 2564086, 2930384, 5128172, 10256344, 20512688]

約数ペア:

[(1, 20512688), (2, 10256344), (4, 5128172), (7, 2930384), (8, 2564086), (14, 1465192), (16, 1282043), (23, 891856), (28, 732596), (46, 445928), (56, 366298), (92, 222964), (112, 183149), (161, 127408), (184, 111482), (322, 63704), (368, 55741), (644, 31852), (1288, 15926), (2576, 7963)]