2549260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 6209280

約数和(自身を除く): 3660020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 139, 140, 262, 278, 524, 556, 655, 695, 917, 973, 1310, 1390, 1834, 1946, 2620, 2780, 3668, 3892, 4585, 4865, 9170, 9730, 18209, 18340, 19460, 36418, 72836, 91045, 127463, 182090, 254926, 364180, 509852, 637315, 1274630, 2549260]

約数ペア:

[(1, 2549260), (2, 1274630), (4, 637315), (5, 509852), (7, 364180), (10, 254926), (14, 182090), (20, 127463), (28, 91045), (35, 72836), (70, 36418), (131, 19460), (139, 18340), (140, 18209), (262, 9730), (278, 9170), (524, 4865), (556, 4585), (655, 3892), (695, 3668), (917, 2780), (973, 2620), (1310, 1946), (1390, 1834)]