20550820

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{3907}}^1$

素因数の和:4179

約数の個数: 24

約数和(自身を含む): 43331904

約数和(自身を除く): 22781084

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 3907, 5260, 7814, 15628, 19535, 39070, 78140, 1027541, 2055082, 4110164, 5137705, 10275410, 20550820]

約数ペア:

[(1, 20550820), (2, 10275410), (4, 5137705), (5, 4110164), (10, 2055082), (20, 1027541), (263, 78140), (526, 39070), (1052, 19535), (1315, 15628), (2630, 7814), (3907, 5260)]