28887760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1931}}^1$

素因数の和:1972

約数の個数: 80

約数和(自身を含む): 77620032

約数和(自身を除く): 48732272

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1360, 1496, 1870, 1931, 2992, 3740, 3862, 7480, 7724, 9655, 14960, 15448, 19310, 21241, 30896, 32827, 38620, 42482, 65654, 77240, 84964, 106205, 131308, 154480, 164135, 169928, 212410, 262616, 328270, 339856, 361097, 424820, 525232, 656540, 722194, 849640, 1313080, 1444388, 1699280, 1805485, 2626160, 2888776, 3610970, 5777552, 7221940, 14443880, 28887760]

約数ペア:

[(1, 28887760), (2, 14443880), (4, 7221940), (5, 5777552), (8, 3610970), (10, 2888776), (11, 2626160), (16, 1805485), (17, 1699280), (20, 1444388), (22, 1313080), (34, 849640), (40, 722194), (44, 656540), (55, 525232), (68, 424820), (80, 361097), (85, 339856), (88, 328270), (110, 262616), (136, 212410), (170, 169928), (176, 164135), (187, 154480), (220, 131308), (272, 106205), (340, 84964), (374, 77240), (440, 65654), (680, 42482), (748, 38620), (880, 32827), (935, 30896), (1360, 21241), (1496, 19310), (1870, 15448), (1931, 14960), (2992, 9655), (3740, 7724), (3862, 7480)]