28786615

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 43217280

約数和(自身を除く): 14430665

約数列:

[1, 5, 11, 13, 19, 55, 65, 95, 143, 163, 169, 209, 247, 715, 815, 845, 1045, 1235, 1793, 1859, 2119, 2717, 3097, 3211, 8965, 9295, 10595, 13585, 15485, 16055, 23309, 27547, 34067, 35321, 40261, 116545, 137735, 170335, 176605, 201305, 303017, 442871, 523393, 1515085, 2214355, 2616965, 5757323, 28786615]

約数ペア:

[(1, 28786615), (5, 5757323), (11, 2616965), (13, 2214355), (19, 1515085), (55, 523393), (65, 442871), (95, 303017), (143, 201305), (163, 176605), (169, 170335), (209, 137735), (247, 116545), (715, 40261), (815, 35321), (845, 34067), (1045, 27547), (1235, 23309), (1793, 16055), (1859, 15485), (2119, 13585), (2717, 10595), (3097, 9295), (3211, 8965)]