25665080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1291}}^1$

素因数の和:1380

約数の個数: 64

約数和(自身を含む): 66977280

約数和(自身を除く): 41312200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1291, 1420, 1988, 2485, 2582, 2840, 3976, 4970, 5164, 6455, 9037, 9940, 10328, 12910, 18074, 19880, 25820, 36148, 45185, 51640, 72296, 90370, 91661, 180740, 183322, 361480, 366644, 458305, 641627, 733288, 916610, 1283254, 1833220, 2566508, 3208135, 3666440, 5133016, 6416270, 12832540, 25665080]

約数ペア:

[(1, 25665080), (2, 12832540), (4, 6416270), (5, 5133016), (7, 3666440), (8, 3208135), (10, 2566508), (14, 1833220), (20, 1283254), (28, 916610), (35, 733288), (40, 641627), (56, 458305), (70, 366644), (71, 361480), (140, 183322), (142, 180740), (280, 91661), (284, 90370), (355, 72296), (497, 51640), (568, 45185), (710, 36148), (994, 25820), (1291, 19880), (1420, 18074), (1988, 12910), (2485, 10328), (2582, 9940), (2840, 9037), (3976, 6455), (4970, 5164)]