28247975

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 42663936

約数和(自身を除く): 14415961

約数列:

[1, 5, 7, 25, 31, 35, 41, 127, 155, 175, 205, 217, 287, 635, 775, 889, 1025, 1085, 1271, 1435, 3175, 3937, 4445, 5207, 5425, 6355, 7175, 8897, 19685, 22225, 26035, 27559, 31775, 36449, 44485, 98425, 130175, 137795, 161417, 182245, 222425, 688975, 807085, 911225, 1129919, 4035425, 5649595, 28247975]

約数ペア:

[(1, 28247975), (5, 5649595), (7, 4035425), (25, 1129919), (31, 911225), (35, 807085), (41, 688975), (127, 222425), (155, 182245), (175, 161417), (205, 137795), (217, 130175), (287, 98425), (635, 44485), (775, 36449), (889, 31775), (1025, 27559), (1085, 26035), (1271, 22225), (1435, 19685), (3175, 8897), (3937, 7175), (4445, 6355), (5207, 5425)]