20731040

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11779}}^1$

素因数の和:11805

約数の個数: 48

約数和(自身を含む): 53434080

約数和(自身を除く): 32703040

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11779, 23558, 47116, 58895, 94232, 117790, 129569, 188464, 235580, 259138, 376928, 471160, 518276, 647845, 942320, 1036552, 1295690, 1884640, 2073104, 2591380, 4146208, 5182760, 10365520, 20731040]

約数ペア:

[(1, 20731040), (2, 10365520), (4, 5182760), (5, 4146208), (8, 2591380), (10, 2073104), (11, 1884640), (16, 1295690), (20, 1036552), (22, 942320), (32, 647845), (40, 518276), (44, 471160), (55, 376928), (80, 259138), (88, 235580), (110, 188464), (160, 129569), (176, 117790), (220, 94232), (352, 58895), (440, 47116), (880, 23558), (1760, 11779)]