19889408

素因数分解:

$2^8\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1009}}^1$

素因数の和:1043

約数の個数: 72

約数和(自身を含む): 49546560

約数和(自身を除く): 29657152

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 128, 154, 176, 224, 256, 308, 352, 448, 616, 704, 896, 1009, 1232, 1408, 1792, 2018, 2464, 2816, 4036, 4928, 7063, 8072, 9856, 11099, 14126, 16144, 19712, 22198, 28252, 32288, 44396, 56504, 64576, 77693, 88792, 113008, 129152, 155386, 177584, 226016, 258304, 310772, 355168, 452032, 621544, 710336, 904064, 1243088, 1420672, 1808128, 2486176, 2841344, 4972352, 9944704, 19889408]

約数ペア:

[(1, 19889408), (2, 9944704), (4, 4972352), (7, 2841344), (8, 2486176), (11, 1808128), (14, 1420672), (16, 1243088), (22, 904064), (28, 710336), (32, 621544), (44, 452032), (56, 355168), (64, 310772), (77, 258304), (88, 226016), (112, 177584), (128, 155386), (154, 129152), (176, 113008), (224, 88792), (256, 77693), (308, 64576), (352, 56504), (448, 44396), (616, 32288), (704, 28252), (896, 22198), (1009, 19712), (1232, 16144), (1408, 14126), (1792, 11099), (2018, 9856), (2464, 8072), (2816, 7063), (4036, 4928)]