28816557

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 49641984

約数和(自身を除く): 20825427

約数列:

[1, 3, 7, 11, 21, 33, 49, 71, 77, 147, 213, 231, 251, 497, 539, 753, 781, 1491, 1617, 1757, 2343, 2761, 3479, 5271, 5467, 8283, 10437, 12299, 16401, 17821, 19327, 36897, 38269, 53463, 57981, 114807, 124747, 135289, 196031, 374241, 405867, 588093, 873229, 1372217, 2619687, 4116651, 9605519, 28816557]

約数ペア:

[(1, 28816557), (3, 9605519), (7, 4116651), (11, 2619687), (21, 1372217), (33, 873229), (49, 588093), (71, 405867), (77, 374241), (147, 196031), (213, 135289), (231, 124747), (251, 114807), (497, 57981), (539, 53463), (753, 38269), (781, 36897), (1491, 19327), (1617, 17821), (1757, 16401), (2343, 12299), (2761, 10437), (3479, 8283), (5271, 5467)]