28075520

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{997}}^1$

素因数の和:1031

約数の個数: 80

約数和(自身を含む): 73508688

約数和(自身を除く): 45433168

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 512, 640, 704, 880, 997, 1280, 1408, 1760, 1994, 2560, 2816, 3520, 3988, 4985, 5632, 7040, 7976, 9970, 10967, 14080, 15952, 19940, 21934, 28160, 31904, 39880, 43868, 54835, 63808, 79760, 87736, 109670, 127616, 159520, 175472, 219340, 255232, 319040, 350944, 438680, 510464, 638080, 701888, 877360, 1276160, 1403776, 1754720, 2552320, 2807552, 3509440, 5615104, 7018880, 14037760, 28075520]

約数ペア:

[(1, 28075520), (2, 14037760), (4, 7018880), (5, 5615104), (8, 3509440), (10, 2807552), (11, 2552320), (16, 1754720), (20, 1403776), (22, 1276160), (32, 877360), (40, 701888), (44, 638080), (55, 510464), (64, 438680), (80, 350944), (88, 319040), (110, 255232), (128, 219340), (160, 175472), (176, 159520), (220, 127616), (256, 109670), (320, 87736), (352, 79760), (440, 63808), (512, 54835), (640, 43868), (704, 39880), (880, 31904), (997, 28160), (1280, 21934), (1408, 19940), (1760, 15952), (1994, 14080), (2560, 10967), (2816, 9970), (3520, 7976), (3988, 7040), (4985, 5632)]