19387555

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 26707968

約数和(自身を除く): 7320413

約数列:

[1, 5, 11, 31, 55, 83, 137, 155, 341, 415, 685, 913, 1507, 1705, 2573, 4247, 4565, 7535, 11371, 12865, 21235, 28303, 46717, 56855, 125081, 141515, 233585, 352501, 625405, 1762505, 3877511, 19387555]

約数ペア:

[(1, 19387555), (5, 3877511), (11, 1762505), (31, 625405), (55, 352501), (83, 233585), (137, 141515), (155, 125081), (341, 56855), (415, 46717), (685, 28303), (913, 21235), (1507, 12865), (1705, 11371), (2573, 7535), (4247, 4565)]