2540534780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{255587}}^1$

素因数の和:255674

約数の個数: 48

約数和(自身を含む): 6183184896

約数和(自身を除く): 3642650116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 255587, 511174, 1022348, 1277935, 1789109, 2555870, 3578218, 5111740, 7156436, 8945545, 17891090, 18146677, 35782180, 36293354, 72586708, 90733385, 127026739, 181466770, 254053478, 362933540, 508106956, 635133695, 1270267390, 2540534780]

約数ペア:

[(1, 2540534780), (2, 1270267390), (4, 635133695), (5, 508106956), (7, 362933540), (10, 254053478), (14, 181466770), (20, 127026739), (28, 90733385), (35, 72586708), (70, 36293354), (71, 35782180), (140, 18146677), (142, 17891090), (284, 8945545), (355, 7156436), (497, 5111740), (710, 3578218), (994, 2555870), (1420, 1789109), (1988, 1277935), (2485, 1022348), (4970, 511174), (9940, 255587)]