81913055

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 123218496

約数和(自身を除く): 41305441

約数列:

[1, 5, 7, 17, 35, 49, 71, 85, 119, 245, 277, 355, 497, 595, 833, 1207, 1385, 1939, 2485, 3479, 4165, 4709, 6035, 8449, 9695, 13573, 17395, 19667, 23545, 32963, 42245, 59143, 67865, 98335, 137669, 164815, 230741, 295715, 334339, 688345, 963683, 1153705, 1671695, 2340373, 4818415, 11701865, 16382611, 81913055]

約数ペア:

[(1, 81913055), (5, 16382611), (7, 11701865), (17, 4818415), (35, 2340373), (49, 1671695), (71, 1153705), (85, 963683), (119, 688345), (245, 334339), (277, 295715), (355, 230741), (497, 164815), (595, 137669), (833, 98335), (1207, 67865), (1385, 59143), (1939, 42245), (2485, 32963), (3479, 23545), (4165, 19667), (4709, 17395), (6035, 13573), (8449, 9695)]