20560988

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4561}}^1$

素因数の和:4602

約数の個数: 36

約数和(自身を含む): 43685712

約数和(自身を除く): 23124724

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4508, 4561, 9122, 18244, 31927, 63854, 104903, 127708, 209806, 223489, 419612, 446978, 734321, 893956, 1468642, 2937284, 5140247, 10280494, 20560988]

約数ペア:

[(1, 20560988), (2, 10280494), (4, 5140247), (7, 2937284), (14, 1468642), (23, 893956), (28, 734321), (46, 446978), (49, 419612), (92, 223489), (98, 209806), (161, 127708), (196, 104903), (322, 63854), (644, 31927), (1127, 18244), (2254, 9122), (4508, 4561)]