1991567137

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1\times {\mathrm{751}}^1$

素因数の和:1061

約数の個数: 32

約数和(自身を含む): 2433351680

約数和(自身を除く): 441784543

約数列:

[1, 7, 19, 127, 133, 157, 751, 889, 1099, 2413, 2983, 5257, 14269, 16891, 19939, 20881, 95377, 99883, 117907, 139573, 378841, 667639, 825349, 1812163, 2240233, 2651887, 12685141, 14974189, 15681631, 104819323, 284509591, 1991567137]

約数ペア:

[(1, 1991567137), (7, 284509591), (19, 104819323), (127, 15681631), (133, 14974189), (157, 12685141), (751, 2651887), (889, 2240233), (1099, 1812163), (2413, 825349), (2983, 667639), (5257, 378841), (14269, 139573), (16891, 117907), (19939, 99883), (20881, 95377)]