638464

素因数分解:

$2^9\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:90

約数の個数: 40

約数和(自身を含む): 1350360

約数和(自身を除く): 711896

約数列:

[1, 2, 4, 8, 16, 29, 32, 43, 58, 64, 86, 116, 128, 172, 232, 256, 344, 464, 512, 688, 928, 1247, 1376, 1856, 2494, 2752, 3712, 4988, 5504, 7424, 9976, 11008, 14848, 19952, 22016, 39904, 79808, 159616, 319232, 638464]

約数ペア:

[(1, 638464), (2, 319232), (4, 159616), (8, 79808), (16, 39904), (29, 22016), (32, 19952), (43, 14848), (58, 11008), (64, 9976), (86, 7424), (116, 5504), (128, 4988), (172, 3712), (232, 2752), (256, 2494), (344, 1856), (464, 1376), (512, 1247), (688, 928)]