28806245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 11110555

約数列:

[1, 5, 13, 17, 65, 85, 131, 199, 221, 655, 995, 1105, 1703, 2227, 2587, 3383, 8515, 11135, 12935, 16915, 26069, 28951, 43979, 130345, 144755, 219895, 338897, 443173, 1694485, 2215865, 5761249, 28806245]

約数ペア:

[(1, 28806245), (5, 5761249), (13, 2215865), (17, 1694485), (65, 443173), (85, 338897), (131, 219895), (199, 144755), (221, 130345), (655, 43979), (995, 28951), (1105, 26069), (1703, 16915), (2227, 12935), (2587, 11135), (3383, 8515)]