21753193

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 28864512

約数和(自身を除く): 7111319

約数列:

[1, 7, 11, 23, 71, 77, 161, 173, 253, 497, 781, 1211, 1633, 1771, 1903, 3979, 5467, 11431, 12283, 13321, 17963, 27853, 43769, 85981, 125741, 135113, 282509, 306383, 945791, 1977563, 3107599, 21753193]

約数ペア:

[(1, 21753193), (7, 3107599), (11, 1977563), (23, 945791), (71, 306383), (77, 282509), (161, 135113), (173, 125741), (253, 85981), (497, 43769), (781, 27853), (1211, 17963), (1633, 13321), (1771, 12283), (1903, 11431), (3979, 5467)]