28278160

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2543}}^1$

素因数の和:2695

約数の個数: 40

約数和(自身を含む): 66245760

約数和(自身を除く): 37967600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2543, 2780, 5086, 5560, 10172, 11120, 12715, 20344, 25430, 40688, 50860, 101720, 203440, 353477, 706954, 1413908, 1767385, 2827816, 3534770, 5655632, 7069540, 14139080, 28278160]

約数ペア:

[(1, 28278160), (2, 14139080), (4, 7069540), (5, 5655632), (8, 3534770), (10, 2827816), (16, 1767385), (20, 1413908), (40, 706954), (80, 353477), (139, 203440), (278, 101720), (556, 50860), (695, 40688), (1112, 25430), (1390, 20344), (2224, 12715), (2543, 11120), (2780, 10172), (5086, 5560)]