81315520

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1777}}^1$

素因数の和:1818

約数の個数: 112

約数和(自身を含む): 227612448

約数和(自身を除く): 146296928

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 320, 352, 416, 440, 520, 572, 704, 715, 832, 880, 1040, 1144, 1430, 1760, 1777, 2080, 2288, 2860, 3520, 3554, 4160, 4576, 5720, 7108, 8885, 9152, 11440, 14216, 17770, 19547, 22880, 23101, 28432, 35540, 39094, 45760, 46202, 56864, 71080, 78188, 92404, 97735, 113728, 115505, 142160, 156376, 184808, 195470, 231010, 254111, 284320, 312752, 369616, 390940, 462020, 508222, 568640, 625504, 739232, 781880, 924040, 1016444, 1251008, 1270555, 1478464, 1563760, 1848080, 2032888, 2541110, 3127520, 3696160, 4065776, 5082220, 6255040, 7392320, 8131552, 10164440, 16263104, 20328880, 40657760, 81315520]

約数ペア:

[(1, 81315520), (2, 40657760), (4, 20328880), (5, 16263104), (8, 10164440), (10, 8131552), (11, 7392320), (13, 6255040), (16, 5082220), (20, 4065776), (22, 3696160), (26, 3127520), (32, 2541110), (40, 2032888), (44, 1848080), (52, 1563760), (55, 1478464), (64, 1270555), (65, 1251008), (80, 1016444), (88, 924040), (104, 781880), (110, 739232), (130, 625504), (143, 568640), (160, 508222), (176, 462020), (208, 390940), (220, 369616), (260, 312752), (286, 284320), (320, 254111), (352, 231010), (416, 195470), (440, 184808), (520, 156376), (572, 142160), (704, 115505), (715, 113728), (832, 97735), (880, 92404), (1040, 78188), (1144, 71080), (1430, 56864), (1760, 46202), (1777, 45760), (2080, 39094), (2288, 35540), (2860, 28432), (3520, 23101), (3554, 22880), (4160, 19547), (4576, 17770), (5720, 14216), (7108, 11440), (8885, 9152)]