209191900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4787}}^1$

素因数の和:4843

約数の個数: 72

約数和(自身を含む): 498718080

約数和(自身を除く): 289526180

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 25, 38, 46, 50, 76, 92, 95, 100, 115, 190, 230, 380, 437, 460, 475, 575, 874, 950, 1150, 1748, 1900, 2185, 2300, 4370, 4787, 8740, 9574, 10925, 19148, 21850, 23935, 43700, 47870, 90953, 95740, 110101, 119675, 181906, 220202, 239350, 363812, 440404, 454765, 478700, 550505, 909530, 1101010, 1819060, 2091919, 2202020, 2273825, 2752525, 4183838, 4547650, 5505050, 8367676, 9095300, 10459595, 11010100, 20919190, 41838380, 52297975, 104595950, 209191900]

約数ペア:

[(1, 209191900), (2, 104595950), (4, 52297975), (5, 41838380), (10, 20919190), (19, 11010100), (20, 10459595), (23, 9095300), (25, 8367676), (38, 5505050), (46, 4547650), (50, 4183838), (76, 2752525), (92, 2273825), (95, 2202020), (100, 2091919), (115, 1819060), (190, 1101010), (230, 909530), (380, 550505), (437, 478700), (460, 454765), (475, 440404), (575, 363812), (874, 239350), (950, 220202), (1150, 181906), (1748, 119675), (1900, 110101), (2185, 95740), (2300, 90953), (4370, 47870), (4787, 43700), (8740, 23935), (9574, 21850), (10925, 19148)]