2640561

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:122

約数の個数: 48

約数和(自身を含む): 4727808

約数和(自身を除く): 2087247

約数列:

[1, 3, 7, 11, 21, 23, 33, 49, 69, 71, 77, 147, 161, 213, 231, 253, 483, 497, 539, 759, 781, 1127, 1491, 1617, 1633, 1771, 2343, 3381, 3479, 4899, 5313, 5467, 10437, 11431, 12397, 16401, 17963, 34293, 37191, 38269, 53889, 80017, 114807, 125741, 240051, 377223, 880187, 2640561]

約数ペア:

[(1, 2640561), (3, 880187), (7, 377223), (11, 240051), (21, 125741), (23, 114807), (33, 80017), (49, 53889), (69, 38269), (71, 37191), (77, 34293), (147, 17963), (161, 16401), (213, 12397), (231, 11431), (253, 10437), (483, 5467), (497, 5313), (539, 4899), (759, 3479), (781, 3381), (1127, 2343), (1491, 1771), (1617, 1633)]