About the Number

87129280

87129279 ← → 87129281

2進数表記:101001100010111110011000000

漢数字表記:八千七百十二万九千二百八十

素因数分解:

2 6 × 5 1 × 7 1 × 97 1 × 401 1

素因数の和:522
約数の個数: 112
約数和(自身を含む): 240158016
約数和(自身を除く): 153028736

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 97, 112, 140, 160, 194, 224, 280, 320, 388, 401, 448, 485, 560, 679, 776, 802, 970, 1120, 1358, 1552, 1604, 1940, 2005, 2240, 2716, 2807, 3104, 3208, 3395, 3880, 4010, 5432, 5614, 6208, 6416, 6790, 7760, 8020, 10864, 11228, 12832, 13580, 14035, 15520, 16040, 21728, 22456, 25664, 27160, 28070, 31040, 32080, 38897, 43456, 44912, 54320, 56140, 64160, 77794, 89824, 108640, 112280, 128320, 155588, 179648, 194485, 217280, 224560, 272279, 311176, 388970, 449120, 544558, 622352, 777940, 898240, 1089116, 1244704, 1361395, 1555880, 2178232, 2489408, 2722790, 3111760, 4356464, 5445580, 6223520, 8712928, 10891160, 12447040, 17425856, 21782320, 43564640, 87129280]

約数ペア:
[(1, 87129280), (2, 43564640), (4, 21782320), (5, 17425856), (7, 12447040), (8, 10891160), (10, 8712928), (14, 6223520), (16, 5445580), (20, 4356464), (28, 3111760), (32, 2722790), (35, 2489408), (40, 2178232), (56, 1555880), (64, 1361395), (70, 1244704), (80, 1089116), (97, 898240), (112, 777940), (140, 622352), (160, 544558), (194, 449120), (224, 388970), (280, 311176), (320, 272279), (388, 224560), (401, 217280), (448, 194485), (485, 179648), (560, 155588), (679, 128320), (776, 112280), (802, 108640), (970, 89824), (1120, 77794), (1358, 64160), (1552, 56140), (1604, 54320), (1940, 44912), (2005, 43456), (2240, 38897), (2716, 32080), (2807, 31040), (3104, 28070), (3208, 27160), (3395, 25664), (3880, 22456), (4010, 21728), (5432, 16040), (5614, 15520), (6208, 14035), (6416, 13580), (6790, 12832), (7760, 11228), (8020, 10864)]

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