About the Number

2000800000

2000799999 ← → 2000800001

2進数表記:1110111010000011100100100000000

漢数字表記:二十億八十万

素因数分解:

2 8 × 5 5 × 41 1 × 61 1

素因数の和:143
約数の個数: 216
約数和(自身を含む): 5197495464
約数和(自身を除く): 3196695464

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 61, 64, 80, 82, 100, 122, 125, 128, 160, 164, 200, 205, 244, 250, 256, 305, 320, 328, 400, 410, 488, 500, 610, 625, 640, 656, 800, 820, 976, 1000, 1025, 1220, 1250, 1280, 1312, 1525, 1600, 1640, 1952, 2000, 2050, 2440, 2500, 2501, 2624, 3050, 3125, 3200, 3280, 3904, 4000, 4100, 4880, 5000, 5002, 5125, 5248, 6100, 6250, 6400, 6560, 7625, 7808, 8000, 8200, 9760, 10000, 10004, 10250, 10496, 12200, 12500, 12505, 13120, 15250, 15616, 16000, 16400, 19520, 20000, 20008, 20500, 24400, 25000, 25010, 25625, 26240, 30500, 32000, 32800, 38125, 39040, 40000, 40016, 41000, 48800, 50000, 50020, 51250, 52480, 61000, 62525, 65600, 76250, 78080, 80000, 80032, 82000, 97600, 100000, 100040, 102500, 122000, 125050, 128125, 131200, 152500, 160000, 160064, 164000, 190625, 195200, 200000, 200080, 205000, 244000, 250100, 256250, 262400, 305000, 312625, 320128, 328000, 381250, 390400, 400000, 400160, 410000, 488000, 500200, 512500, 610000, 625250, 640256, 656000, 762500, 800000, 800320, 820000, 976000, 1000400, 1025000, 1220000, 1250500, 1312000, 1525000, 1563125, 1600640, 1640000, 1952000, 2000800, 2050000, 2440000, 2501000, 3050000, 3126250, 3201280, 3280000, 4001600, 4100000, 4880000, 5002000, 6100000, 6252500, 6560000, 7815625, 8003200, 8200000, 9760000, 10004000, 12200000, 12505000, 15631250, 16006400, 16400000, 20008000, 24400000, 25010000, 31262500, 32800000, 40016000, 48800000, 50020000, 62525000, 80032000, 100040000, 125050000, 200080000, 250100000, 400160000, 500200000, 1000400000, 2000800000]

約数ペア:
[(1, 2000800000), (2, 1000400000), (4, 500200000), (5, 400160000), (8, 250100000), (10, 200080000), (16, 125050000), (20, 100040000), (25, 80032000), (32, 62525000), (40, 50020000), (41, 48800000), (50, 40016000), (61, 32800000), (64, 31262500), (80, 25010000), (82, 24400000), (100, 20008000), (122, 16400000), (125, 16006400), (128, 15631250), (160, 12505000), (164, 12200000), (200, 10004000), (205, 9760000), (244, 8200000), (250, 8003200), (256, 7815625), (305, 6560000), (320, 6252500), (328, 6100000), (400, 5002000), (410, 4880000), (488, 4100000), (500, 4001600), (610, 3280000), (625, 3201280), (640, 3126250), (656, 3050000), (800, 2501000), (820, 2440000), (976, 2050000), (1000, 2000800), (1025, 1952000), (1220, 1640000), (1250, 1600640), (1280, 1563125), (1312, 1525000), (1525, 1312000), (1600, 1250500), (1640, 1220000), (1952, 1025000), (2000, 1000400), (2050, 976000), (2440, 820000), (2500, 800320), (2501, 800000), (2624, 762500), (3050, 656000), (3125, 640256), (3200, 625250), (3280, 610000), (3904, 512500), (4000, 500200), (4100, 488000), (4880, 410000), (5000, 400160), (5002, 400000), (5125, 390400), (5248, 381250), (6100, 328000), (6250, 320128), (6400, 312625), (6560, 305000), (7625, 262400), (7808, 256250), (8000, 250100), (8200, 244000), (9760, 205000), (10000, 200080), (10004, 200000), (10250, 195200), (10496, 190625), (12200, 164000), (12500, 160064), (12505, 160000), (13120, 152500), (15250, 131200), (15616, 128125), (16000, 125050), (16400, 122000), (19520, 102500), (20000, 100040), (20008, 100000), (20500, 97600), (24400, 82000), (25000, 80032), (25010, 80000), (25625, 78080), (26240, 76250), (30500, 65600), (32000, 62525), (32800, 61000), (38125, 52480), (39040, 51250), (40000, 50020), (40016, 50000), (41000, 48800)]

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