20521535744

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{35423}}^1$

素因数の和:35543

約数の個数: 72

約数和(自身を含む): 42864740352

約数和(自身を除く): 22343204608

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 73, 124, 128, 146, 248, 256, 292, 496, 584, 992, 1168, 1984, 2263, 2336, 3968, 4526, 4672, 7936, 9052, 9344, 18104, 18688, 35423, 36208, 70846, 72416, 141692, 144832, 283384, 289664, 566768, 579328, 1098113, 1133536, 2196226, 2267072, 2585879, 4392452, 4534144, 5171758, 8784904, 9068288, 10343516, 17569808, 20687032, 35139616, 41374064, 70279232, 80162249, 82748128, 140558464, 160324498, 165496256, 281116928, 320648996, 330992512, 641297992, 661985024, 1282595984, 2565191968, 5130383936, 10260767872, 20521535744]

約数ペア:

[(1, 20521535744), (2, 10260767872), (4, 5130383936), (8, 2565191968), (16, 1282595984), (31, 661985024), (32, 641297992), (62, 330992512), (64, 320648996), (73, 281116928), (124, 165496256), (128, 160324498), (146, 140558464), (248, 82748128), (256, 80162249), (292, 70279232), (496, 41374064), (584, 35139616), (992, 20687032), (1168, 17569808), (1984, 10343516), (2263, 9068288), (2336, 8784904), (3968, 5171758), (4526, 4534144), (4672, 4392452), (7936, 2585879), (9052, 2267072), (9344, 2196226), (18104, 1133536), (18688, 1098113), (35423, 579328), (36208, 566768), (70846, 289664), (72416, 283384), (141692, 144832)]