19104995

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{211}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 28492800

約数和(自身を除く): 9387805

約数列:

[1, 5, 7, 13, 35, 65, 91, 199, 211, 455, 995, 1055, 1393, 1477, 2587, 2743, 6965, 7385, 12935, 13715, 18109, 19201, 41989, 90545, 96005, 209945, 293923, 545857, 1469615, 2729285, 3820999, 19104995]

約数ペア:

[(1, 19104995), (5, 3820999), (7, 2729285), (13, 1469615), (35, 545857), (65, 293923), (91, 209945), (199, 96005), (211, 90545), (455, 41989), (995, 19201), (1055, 18109), (1393, 13715), (1477, 12935), (2587, 7385), (2743, 6965)]