28256890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{359}}^1\times {\mathrm{463}}^1$

素因数の和:846

約数の個数: 32

約数和(自身を含む): 54120960

約数和(自身を除く): 25864070

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 359, 463, 718, 926, 1795, 2315, 3590, 4630, 6103, 7871, 12206, 15742, 30515, 39355, 61030, 78710, 166217, 332434, 831085, 1662170, 2825689, 5651378, 14128445, 28256890]

約数ペア:

[(1, 28256890), (2, 14128445), (5, 5651378), (10, 2825689), (17, 1662170), (34, 831085), (85, 332434), (170, 166217), (359, 78710), (463, 61030), (718, 39355), (926, 30515), (1795, 15742), (2315, 12206), (3590, 7871), (4630, 6103)]