28407520

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4129}}^1$

素因数の和:4187

約数の個数: 48

約数和(自身を含む): 68690160

約数和(自身を除く): 40282640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 3440, 4129, 6880, 8258, 16516, 20645, 33032, 41290, 66064, 82580, 132128, 165160, 177547, 330320, 355094, 660640, 710188, 887735, 1420376, 1775470, 2840752, 3550940, 5681504, 7101880, 14203760, 28407520]

約数ペア:

[(1, 28407520), (2, 14203760), (4, 7101880), (5, 5681504), (8, 3550940), (10, 2840752), (16, 1775470), (20, 1420376), (32, 887735), (40, 710188), (43, 660640), (80, 355094), (86, 330320), (160, 177547), (172, 165160), (215, 132128), (344, 82580), (430, 66064), (688, 41290), (860, 33032), (1376, 20645), (1720, 16516), (3440, 8258), (4129, 6880)]