19817811

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:584

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 12115629

約数列:

[1, 3, 9, 13, 27, 39, 117, 131, 351, 393, 431, 1179, 1293, 1703, 3537, 3879, 5109, 5603, 11637, 15327, 16809, 45981, 50427, 56461, 151281, 169383, 508149, 733993, 1524447, 2201979, 6605937, 19817811]

約数ペア:

[(1, 19817811), (3, 6605937), (9, 2201979), (13, 1524447), (27, 733993), (39, 508149), (117, 169383), (131, 151281), (351, 56461), (393, 50427), (431, 45981), (1179, 16809), (1293, 15327), (1703, 11637), (3537, 5603), (3879, 5109)]