21078764

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{461}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 44706816

約数和(自身を除く): 23628052

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 71, 92, 142, 161, 284, 322, 461, 497, 644, 922, 994, 1633, 1844, 1988, 3227, 3266, 6454, 6532, 10603, 11431, 12908, 21206, 22862, 32731, 42412, 45724, 65462, 74221, 130924, 148442, 229117, 296884, 458234, 752813, 916468, 1505626, 3011252, 5269691, 10539382, 21078764]

約数ペア:

[(1, 21078764), (2, 10539382), (4, 5269691), (7, 3011252), (14, 1505626), (23, 916468), (28, 752813), (46, 458234), (71, 296884), (92, 229117), (142, 148442), (161, 130924), (284, 74221), (322, 65462), (461, 45724), (497, 42412), (644, 32731), (922, 22862), (994, 21206), (1633, 12908), (1844, 11431), (1988, 10603), (3227, 6532), (3266, 6454)]