399040

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:89

約数の個数: 56

約数和(自身を含む): 1005840

約数和(自身を除く): 606800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 43, 58, 64, 80, 86, 116, 145, 160, 172, 215, 232, 290, 320, 344, 430, 464, 580, 688, 860, 928, 1160, 1247, 1376, 1720, 1856, 2320, 2494, 2752, 3440, 4640, 4988, 6235, 6880, 9280, 9976, 12470, 13760, 19952, 24940, 39904, 49880, 79808, 99760, 199520, 399040]

約数ペア:

[(1, 399040), (2, 199520), (4, 99760), (5, 79808), (8, 49880), (10, 39904), (16, 24940), (20, 19952), (29, 13760), (32, 12470), (40, 9976), (43, 9280), (58, 6880), (64, 6235), (80, 4988), (86, 4640), (116, 3440), (145, 2752), (160, 2494), (172, 2320), (215, 1856), (232, 1720), (290, 1376), (320, 1247), (344, 1160), (430, 928), (464, 860), (580, 688)]