20386744

素因数分解:

$2^3\times 7^2\times {\mathrm{131}}^1\times {\mathrm{397}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 44918280

約数和(自身を除く): 24531536

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 131, 196, 262, 392, 397, 524, 794, 917, 1048, 1588, 1834, 2779, 3176, 3668, 5558, 6419, 7336, 11116, 12838, 19453, 22232, 25676, 38906, 51352, 52007, 77812, 104014, 155624, 208028, 364049, 416056, 728098, 1456196, 2548343, 2912392, 5096686, 10193372, 20386744]

約数ペア:

[(1, 20386744), (2, 10193372), (4, 5096686), (7, 2912392), (8, 2548343), (14, 1456196), (28, 728098), (49, 416056), (56, 364049), (98, 208028), (131, 155624), (196, 104014), (262, 77812), (392, 52007), (397, 51352), (524, 38906), (794, 25676), (917, 22232), (1048, 19453), (1588, 12838), (1834, 11116), (2779, 7336), (3176, 6419), (3668, 5558)]