About the Number

388640256

388640255 ← → 388640257

2進数表記:10111001010100010111000000000

漢数字表記:三億八千八百六十四万二百五十六

素因数分解:

2 9 × 3 1 × 421 1 × 601 1

素因数の和:1043
約数の個数: 80
約数和(自身を含む): 1039548048
約数和(自身を除く): 650907792

約数列:
[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 421, 512, 601, 768, 842, 1202, 1263, 1536, 1684, 1803, 2404, 2526, 3368, 3606, 4808, 5052, 6736, 7212, 9616, 10104, 13472, 14424, 19232, 20208, 26944, 28848, 38464, 40416, 53888, 57696, 76928, 80832, 107776, 115392, 153856, 161664, 215552, 230784, 253021, 307712, 323328, 461568, 506042, 646656, 759063, 923136, 1012084, 1518126, 2024168, 3036252, 4048336, 6072504, 8096672, 12145008, 16193344, 24290016, 32386688, 48580032, 64773376, 97160064, 129546752, 194320128, 388640256]

約数ペア:
[(1, 388640256), (2, 194320128), (3, 129546752), (4, 97160064), (6, 64773376), (8, 48580032), (12, 32386688), (16, 24290016), (24, 16193344), (32, 12145008), (48, 8096672), (64, 6072504), (96, 4048336), (128, 3036252), (192, 2024168), (256, 1518126), (384, 1012084), (421, 923136), (512, 759063), (601, 646656), (768, 506042), (842, 461568), (1202, 323328), (1263, 307712), (1536, 253021), (1684, 230784), (1803, 215552), (2404, 161664), (2526, 153856), (3368, 115392), (3606, 107776), (4808, 80832), (5052, 76928), (6736, 57696), (7212, 53888), (9616, 40416), (10104, 38464), (13472, 28848), (14424, 26944), (19232, 20208)]

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