28258165

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{239}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 10932875

約数列:

[1, 5, 13, 17, 65, 85, 107, 221, 239, 535, 1105, 1195, 1391, 1819, 3107, 4063, 6955, 9095, 15535, 20315, 23647, 25573, 52819, 118235, 127865, 264095, 332449, 434741, 1662245, 2173705, 5651633, 28258165]

約数ペア:

[(1, 28258165), (5, 5651633), (13, 2173705), (17, 1662245), (65, 434741), (85, 332449), (107, 264095), (221, 127865), (239, 118235), (535, 52819), (1105, 25573), (1195, 23647), (1391, 20315), (1819, 15535), (3107, 9095), (4063, 6955)]