20913200

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1$

素因数の和:140

約数の個数: 180

約数和(自身を含む): 64417752

約数和(自身を除く): 43504552

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 35, 40, 44, 49, 50, 55, 56, 70, 77, 80, 88, 97, 98, 100, 110, 112, 140, 154, 175, 176, 194, 196, 200, 220, 245, 275, 280, 308, 350, 385, 388, 392, 400, 440, 485, 490, 539, 550, 560, 616, 679, 700, 770, 776, 784, 880, 970, 980, 1067, 1078, 1100, 1225, 1232, 1358, 1400, 1540, 1552, 1925, 1940, 1960, 2134, 2156, 2200, 2425, 2450, 2695, 2716, 2800, 3080, 3395, 3850, 3880, 3920, 4268, 4312, 4400, 4753, 4850, 4900, 5335, 5390, 5432, 6160, 6790, 7469, 7700, 7760, 8536, 8624, 9506, 9700, 9800, 10670, 10780, 10864, 13475, 13580, 14938, 15400, 16975, 17072, 19012, 19400, 19600, 21340, 21560, 23765, 26675, 26950, 27160, 29876, 30800, 33950, 37345, 38024, 38800, 42680, 43120, 47530, 52283, 53350, 53900, 54320, 59752, 67900, 74690, 76048, 85360, 95060, 104566, 106700, 107800, 118825, 119504, 135800, 149380, 186725, 190120, 209132, 213400, 215600, 237650, 261415, 271600, 298760, 373450, 380240, 418264, 426800, 475300, 522830, 597520, 746900, 836528, 950600, 1045660, 1307075, 1493800, 1901200, 2091320, 2614150, 2987600, 4182640, 5228300, 10456600, 20913200]

約数ペア:

[(1, 20913200), (2, 10456600), (4, 5228300), (5, 4182640), (7, 2987600), (8, 2614150), (10, 2091320), (11, 1901200), (14, 1493800), (16, 1307075), (20, 1045660), (22, 950600), (25, 836528), (28, 746900), (35, 597520), (40, 522830), (44, 475300), (49, 426800), (50, 418264), (55, 380240), (56, 373450), (70, 298760), (77, 271600), (80, 261415), (88, 237650), (97, 215600), (98, 213400), (100, 209132), (110, 190120), (112, 186725), (140, 149380), (154, 135800), (175, 119504), (176, 118825), (194, 107800), (196, 106700), (200, 104566), (220, 95060), (245, 85360), (275, 76048), (280, 74690), (308, 67900), (350, 59752), (385, 54320), (388, 53900), (392, 53350), (400, 52283), (440, 47530), (485, 43120), (490, 42680), (539, 38800), (550, 38024), (560, 37345), (616, 33950), (679, 30800), (700, 29876), (770, 27160), (776, 26950), (784, 26675), (880, 23765), (970, 21560), (980, 21340), (1067, 19600), (1078, 19400), (1100, 19012), (1225, 17072), (1232, 16975), (1358, 15400), (1400, 14938), (1540, 13580), (1552, 13475), (1925, 10864), (1940, 10780), (1960, 10670), (2134, 9800), (2156, 9700), (2200, 9506), (2425, 8624), (2450, 8536), (2695, 7760), (2716, 7700), (2800, 7469), (3080, 6790), (3395, 6160), (3850, 5432), (3880, 5390), (3920, 5335), (4268, 4900), (4312, 4850), (4400, 4753)]